Miomir Korac, lead archaeologist, poses for a picture at the remains of Roman legion's headquarters at the ancient city of Viminacium, near Kostolac, Serbia, November 25, 2020. Picture taken November 25, 2020. REUTERS/Marko Djurica 

An archaeologist excavates the remains of Roman legion's headquarters at the ancient city of Viminacium, near Kostolac, Serbia, November 25, 2020. Picture taken November 25, 2020. REUTERS/Marko Djurica 

Silver coins found at the remains of a Roman legion's headquarters are seen at the ancient city of Viminacium, near Kostolac, Serbia, November 25, 2020. Picture taken November 25, 2020. REUTERS/Marko Djurica 

Archaeologists excavate the remains of Roman legion's headquarters at the ancient city of Viminacium, near Kostolac, Serbia, November 25, 2020. Picture taken November 25, 2020. REUTERS/Marko Djurica 

Archaeologists excavate the remains of Roman legion's headquarters at the ancient city of Viminacium, near Kostolac, Serbia, November 25, 2020. Picture taken November 25, 2020. REUTERS/Marko Djurica 

Archaeologists excavate the remains of Roman legion's headquarters at the ancient city of Viminacium, near Kostolac, Serbia, November 25, 2020. Picture taken November 25, 2020. Picture taken with a drone. REUTERS/Marko Djurica 

Archaeologists excavate the remains of Roman legion's headquarters at the ancient city of Viminacium, near Kostolac, Serbia, November 25, 2020. Picture taken November 25, 2020. Picture taken with a drone. REUTERS/Marko Djurica 

Archaeologists excavate the remains of Roman legion's headquarters at the ancient city of Viminacium, near Kostolac, Serbia, November 25, 2020. Picture taken November 25, 2020. Picture taken with a drone. REUTERS/Marko Djurica 

Archaeologists excavate the remains of Roman legion's headquarters at the ancient city of Viminacium, near Kostolac, Serbia, November 25, 2020. Picture taken November 25, 2020. Picture taken with a drone. REUTERS/Marko Djurica 

Syrian Army soldiers inspect the damaged site at the police headquarters in central Damascus, Syria October 11, 2017. REUTERS/Omar Sanadiki 

A damaged site is seen in front of police headquarters in central Damascus, Syria October 11, 2017. REUTERS/Omar Sanadiki 

A damaged site is seen in front of police headquarters in central Damascus, Syria October 11, 2017. REUTERS/Omar Sanadiki 

Dozens of Afghan soldiers were killed or wounded on Friday when Taliban gunmen disguised in Afghan army uniform talked their way past checkpoints and attacked a military base. 

Russia Ambassador Vitaly Churkin and Venezuelan Ambassador Rafael Ramirez vetoes a draft resolution that demands an immediate end to air strikes and military flights over Syria's Aleppo city, at the U.N. Headquarters in New York, U.S., October 8, 2016. REUTERS/Eduardo Munoz 

Iraq's Prime Minister Haider al-Abadi (front 2nd L) walks during his visit to an Iraqi army base in Camp Tariq near Falluja, Iraq, June 1, 2016. REUTERS/Alaa Al-Marjani. TPX IMAGES OF THE DAY

Iraq's Prime Minister Haider al-Abadi (front L) walks during his visit to an Iraqi army base in Camp Tariq near Falluja, Iraq, June 1, 2016. REUTERS/Alaa Al-Marjani

The entrance is seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Recording devices are seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The water filter room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 20166. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The control centre of all the doors of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War is seen after it came up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The legal quarter is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

An operations guide to a telephone console is seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

A decontamination tap is seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The entrance is seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Light comes in from the open blast door at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

TThe entrance and for sale sign are seen outside a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The operations room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

A message chute is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

A blast door leads to the exterior of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne

The sick bay room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The fresh air filter room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The main generator room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Long-life tins of food are displayed in the kitchens of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland?s First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The escape hatch is seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The generator indicators light up in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Long-life tins of food are displayed in the kitchens of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

A BBC broadcast room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The blueprint maps of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War are displayed afterit came up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

A bedroom dormitory is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne TPX IMAGES OF THE DAY 

Long-life tins of food are displayed in the kitchens of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The back-up telephone is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

A path leads to the entrance of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Conference roomis seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The generator room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Instrauctions for the cooking facilities are seen in the kitchens of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

A BBC broadcast room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

BBC broadcast room in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Trees surround the entrance of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Corridor is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Long corridor is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Tea making facilities are seen in the kitchens of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Lounge room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

A man ilumintaes the temperature gauge of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Corridor is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Clock and speaker are seen in the conference room at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Blast door leads to the exterior of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

General clerical roomis seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Pope Francis waits to address a plenary meeting of the United Nations Sustainable Development Summit 2015 at United Nations headquarters in Manhattan, New York, September 25, 2015. More than 150 world leaders are expected to attend the U.N. Sustainable Development Summit from September 25-27 at the United Nations in New York to formally adopt an ambitious new sustainable development agenda a press statement by the U.N. stated REUTERS/Mike Segar 

Pope Francis waits to address a plenary meeting of the United Nations Sustainable Development Summit 2015 at United Nations headquarters in Manhattan, New York, September 25, 2015. More than 150 world leaders are expected to attend the U.N. Sustainable Development Summit from September 25-27 at the United Nations in New York to formally adopt an ambitious new sustainable development agenda a press statement by the U.N. stated REUTERS/Mike Segar 

Pope Francis waits to address a plenary meeting of the United Nations Sustainable Development Summit 2015 as U.N. Secretary-Gereral Ban Ki-moon speaks (top left) at United Nations headquarters in Manhattan, New York, September 25, 2015. More than 150 world leaders are expected to attend the U.N. Sustainable Development Summit from September 25-27 at the United Nations in New York to formally adopt an ambitious new sustainable development agenda a press statement by the U.N. stated REUTERS/Mike Segar