A fireman fights fire at shanties in a residential area near the Malacanang presidential palace in San Miguel district in metro Manila, Philippines August 16, 2017. REUTERS/Romeo Ranoco TPX IMAGES OF THE DAY 

A pile of recyclable bullet casings used for the production of copper wires is seen at a foundry in Peshawar, Pakistan August 15, 2017. REUTERS/Fayaz Aziz TPX IMAGES OF THE DAY 

Damaged buildings are pictured at night in the rebel-held area, in the city of Deraa, Syria July 15, 2017. Picture taken July 15, 2017. Picture taken using long exposure. REUTERS/Alaa Al-Faqir TPX IMAGES OF THE DAY 

Smoke rises from clashes during the fight with the Islamic States militants in the Old City of Mosul, Iraq July 3, 2017. REUTERS/Ahmed Jadallah TPX IMAGES OF THE DAY 

The remains of al-Hadba minaret at the Grand al-Nuri Mosque are pictured in the Old City in Mosul, Iraq July 2, 2017. REUTERS/Erik De Castro TPX IMAGES OF THE DAY 

The remains of al-Hadba minaret at the Grand al-Nuri Mosque is pictured behind the ruins of the mosque after it was retaken by the Iraqi forces from Islamic State militants at the Old City in Mosul, Iraq June 29, 2017. REUTERS/Erik De Castro TPX IMAGES OF THE DAY 

Smoke billows from the ruined Grand al-Nuri Mosque after it was retaken by the Iraqi forces at the Old City in Mosul, Iraq June 29, 2017. REUTERS/Erik De Castro TPX IMAGES OF THE DAY 

A member of the Iraqi Federal Police runs for cover on the frontline in the Old City of Mosul, Iraq June 28, 2017. REUTERS/Ahmed Jadallah TPX IMAGES OF THE DAY 

A destroyed al-Hadba minaret at Grand al-Nuri Mosque (L) is seen in Mosul, Iraq June 27, 2017. REUTERS/Erik De Castro TPX IMAGES OF THE DAY 

Smoke rises from clashes in the neighbourhood of Shifa, in western Mosul, Iraq June 15, 2017. REUTERS/Erik De Castro TPX IMAGES OF THE DAY 

Plants grow on the abandoned train at the workshop of Nepal Railways Corporation Ltd., in Janakpur, Nepal, June 4, 2017. REUTERS/Navesh Chitrakar SEARCH "CHITRAKAR RAILWAY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. 

An Iraqi soldier carries a block of ice for his comrades at their positions in Mosul's al-Zanjili's district in Iraq June 7, 2017. REUTERS/Erik De Castro TPX IMAGES OF THE DAY 

Smoke billows at the position of the Islamic State militants after it was hit by a rocket from an Iraqi military helicopter during fighting in western Mosul, Iraq June 5, 2017. REUTERS/Erik De Castro TPX IMAGES OF THE DAY 

An Iraqi military armoured fighting vehicle (AFV) drives past a burning Iraqi military truck after it was hit by the Islamic State militants during fighting in western Mosul, Iraq June 5, 2017. REUTERS/Erik De Castro TPX IMAGES OF THE DAY 

Al-Hadba minaret at the Grand Mosque is seen through a building window in the old city of Mosul, Iraq June 1, 2017. REUTERS/Alaa Al-Marjani TPX IMAGES OF THE DAY 

Forensic technicians work at a site believed to be a mass grave at an abandoned ranch where state authorities previously discovered a mass grave with the remains of 56 people a year ago, in the municipality of Garcia, on the outskirts of Monterrey, Mexico, May 31, 2017. REUTERS/Daniel Becerril TPX IMAGES OF THE DAY 

Two displaced Iraqi women stop to arrange their belongings as they flee from western Mosul, Iraq May 31, 2017. REUTERS/Alkis Konstantinidis TPX IMAGES OF THE DAY 

A hospital bed stands at a former Soviet military hospital, which lies derelict since 1991 when the last Russian troops left Hungary, in Budapest, Hungary, May 15, 2017. REUTERS/Laszlo Balogh SEARCH "SOVIET HOSPITAL" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

A room of a surgery department of a former Soviet military hospital, which lies derelict since 1991 when the last Russian troops left Hungary, is seen in Budapest, Hungary, May 22, 2017. REUTERS/Laszlo Balogh SEARCH "SOVIET HOSPITAL" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

An aerial view shows the remains of burnt homes from what residents said was the latest attack by armed men in Thonyor, Leer County, South Sudan February 23, 2017. Picture taken February 23, 2017. REUTERS/Siegfried Modola TPX IMAGES OF THE DAY 

Buildings burn after being set alight by protesters preparing to evacuate the main opposition camp against the Dakota Access oil pipeline near Cannon Ball, North Dakota, U.S., February 22, 2017. REUTERS/Terray Sylvester TPX IMAGES OF THE DAY 

Migrants walk during a snowfall inside a derelict customs warehouse in Belgrade, Serbia, January 11, 2017. REUTERS/Marko Djurica TPX IMAGES OF THE DAY 

A migrant stands outside a derelict customs warehouse in Belgrade, Serbia, December 22, 2016. REUTERS/Marko Djurica TPX IMAGES OF THE DAY 

Migrants stand in line to receive free food outside a derelict customs warehouse in Belgrade, Serbia December 21, 2016. REUTERS/Marko Djurica TPX IMAGES OF THE DAY 

Migrants stand in line to receive free food outside a derelict customs warehouse in Belgrade, Serbia December 21, 2016. REUTERS/Marko Djurica 

Migrants stand in line to receive free food outside a derelict customs warehouse in Belgrade, Serbia December 21, 2016. REUTERS/Marko Djurica 

Migrants stand inside a derelict customs warehouse in Belgrade, Serbia December 21, 2016. REUTERS/Marko Djurica 

Migrants pose for a picture inside a derelict customs warehouse in Belgrade, Serbia December 21, 2016. REUTERS/Marko Djurica 

Migrants look on a mobile phone outside a derelict customs warehouse in Belgrade, Serbia, November 17, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants walk outside a derelict customs warehouse at night in Belgrade, Serbia, November 17, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants warm themselves and prepare food by the fire inside a derelict customs warehouse in Belgrade, Serbia, November 17, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A young migrant prays on a bench near a derelict customs warehouse in Belgrade, Serbia, November 17, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A migrant warms himself by the fire inside a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants cook onions inside a derelict customs warehouse in Belgrade, Serbia, November 11, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants queue to receive free tea near a derelict customs warehouse in Belgrade, Serbia, November 17, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants warm themselves by the fire outside a derelict customs warehouse in Belgrade, Serbia, November 17, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

A migrant poses for a picture inside a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A piece of bread lies on salt on a table inside a derelict customs warehouse in Belgrade, Serbia, November 17, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants are seen through a window of a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A migrant poses for a picture inside a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

A graffiti reading "Open the border of Hungary pls" is seen on a wall of a derelict customs warehouse occupied by migrants in Belgrade, Serbia, November 11, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants rest wrapped in blankets inside a derelict customs warehouse in Belgrade, Serbia, November 11, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A pair of shoes are left to dry inside a derelict customs warehouse occupied by migrants in Belgrade, Serbia, November 11, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A migrant wrapped in a blanket sleeps on a floor inside a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A ray of light falls on a migrant inside a derelict customs warehouse in Belgrade, Serbia, November 11, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

A migrant sleeps on a cardboard placed on a floor inside a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants wrapped in blankets sleep on a floor of a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants wrapped in blankets sleep on a floor inside a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Rays of light shine through holes on walls of a derelict customs warehouse occupied by migrants in Belgrade, Serbia, November 11, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants wrapped in blankets sleep on a floor inside a derelict customs warehouse in Belgrade, Serbia, November 11, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A drawing of a world map is seen on a wall inside a derelict customs warehouse occupied by migrants in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A migrant listens to music on his mobile phone inside a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Darvish, a fifteen-year-old migrant from Afghanistan, poses for a picture inside a derelict customs warehouse in Belgrade, Serbia, November 11, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A migrant smokes a cigarette in front of a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A migrant stands wrapped in a blanket in front of a derelict customs warehouse in Belgrade, Serbia, November 16, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Clothes are left to dry on a wall of a derelict customs warehouse occupied by migrants in Belgrade, Serbia, November 11, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Migrants stand outside a derelict customs warehouse in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Protesters fall to the ground a they run for cover as police officers open a water canon during a march to call for the removal of President Jacob Zuma outside the Union Buildings in Pretoria, South Africa, November 2, 2016. REUTERS/Siphiwe Sibeko 

A new graduate of Benghazi University takes a selfie in front of a ruined building at his university former headquarters which was destroyed during clashes in 2014 between members of the Libyan National Army and Shura Council of Libyan Revolutionaries, an alliance of former anti-Gaddafi rebels who have joined forces with Islamist group Ansar al-Sharia, in Benghazi, Libya, October 27, 2016. REUTERS/Esam Omran Al-Fetori TPX IMAGES OF THE DAY

A boy plays in a building destroyed by Hurricane Matthew in Coteaux, Haiti, October 22, 2016. REUTERS/Andres Martinez Casares