General view shows the wire chaos of generator distribution of electricity, after continuous power outages in Najaf, Iraq June 21, 2019. Picture taken June 21, 2019. REUTERS/Alaa al-Marjani

A worker tries to rehabilitate an electrical generator in a generator repair shop, after continuous power outages in Najaf, Iraq June 22, 2019. Picture taken June 22, 2019. REUTERS/Alaa al-Marjani

A worker fixes electrical strips at an electrical generator, after continuous power outages in Najaf, Iraq June 22, 2019. Picture taken June 22, 2019. REUTERS/Alaa al-Marjani

A worker is seen near an electrical generator board, after continuous power outages in Najaf, Iraq June 22, 2019. Picture taken June 22, 2019. REUTERS/Alaa al-Marjani

A man tries to run his personal electrical generator at home, after continuous power outages in Najaf, Iraq June 21, 2019. Picture taken June 21, 2019. REUTERS/Alaa al-Marjani

Cell phones and other accessories, which an Iraqi soldier said are used by the Islamic State militants for bomb attacks, are seen at an abandoned house previously used by the militants in western Mosul, Iraq June 15, 2017. REUTERS/Erik De Castro

Cables and computers are seen inside a data centre at an office in the heart of the financial district in London, Britain May 15, 2017. REUTERS/Dylan Martinez

Cables and computers are seen inside a data centre at an office in the heart of the financial district in London, Britain May 15, 2017. REUTERS/Dylan Martinez

An American soldier takes a selfie at the U.S. army base in Qayyara, south of Mosul October 25, 2016. REUTERS/Alaa Al-Marjani

A technician from the NGO Mines Advisory Group (MAG) holds a trigger before destroying unexploded bombs and ordnance found in a field, that were dropped by the U.S. Air Force planes during the Vietnam War, at Phaxay district in Xieng Khouang province, Laos September 2, 2016. REUTERS/Jorge Silva SEARCH "LAOS BOMBS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Investigators look for evidence after a suicide bomber blew himself up close to a police checkpoint in Peshawar, Pakistan January 19, 2016. REUTERS/Fayaz Aziz TPX IMAGES OF THE DAY

Traders pause during a moment of silence, to honor victims of the Sept. 11 attacks, on the floor at the New York Stock Exchange in New York, September 11, 2015. Relatives of the nearly 3,000 people killed in the Sept. 11, 2001, attacks are due to gather in New York, Pennsylvania and outside Washington on Friday to mark the 14th anniversary of the hijacked airliner strikes carried out by al Qaeda militants. REUTERS/Brendan McDermid TPX IMAGES OF THE DAY

Traders pause during a moment of silence, to honor victims of the Sept. 11 attacks, on the floor at the New York Stock Exchange in New York, September 11, 2015. Relatives of the nearly 3,000 people killed in the Sept. 11, 2001, attacks are due to gather in New York, Pennsylvania and outside Washington on Friday to mark the 14th anniversary of the hijacked airliner strikes carried out by al Qaeda militants. REUTERS/Brendan McDermid

Traders pause during a moment of silence, to honor victims of the Sept. 11 attacks, on the floor at the New York Stock Exchange in New York, September 11, 2015. Relatives of the nearly 3,000 people killed in the Sept. 11, 2001, attacks are due to gather in New York, Pennsylvania and outside Washington on Friday to mark the 14th anniversary of the hijacked airliner strikes carried out by al Qaeda militants. REUTERS/Brendan McDermid

Traders pause during a moment of silence, to honor victims of the Sept. 11 attacks, on the floor at the New York Stock Exchange in New York, September 11, 2015. Relatives of the nearly 3,000 people killed in the Sept. 11, 2001, attacks are due to gather in New York, Pennsylvania and outside Washington on Friday to mark the 14th anniversary of the hijacked airliner strikes carried out by al Qaeda militants. REUTERS/Brendan McDermid

Traders pause during a moment of silence, to honor victims of the Sept. 11 attacks, on the floor at the New York Stock Exchange in New York, September 11, 2015. Relatives of the nearly 3,000 people killed in the Sept. 11, 2001, attacks are due to gather in New York, Pennsylvania and outside Washington on Friday to mark the 14th anniversary of the hijacked airliner strikes carried out by al Qaeda militants. REUTERS/Brendan McDermid

A UN mine disposal expert from Cambodia walks while holding a mine detector during a media tour in the UN-controlled buffer zone near the village of Mammari, Cyprus August 26, 2015. REUTERS/Yiannis Kourtoglou

A man walks past a digital billboard showing a sketch of the main suspect in Monday's attack on Erawan shrine, in Bangkok, Thailand, August 23, 2015. Thai authorities have tripled to $85,000 a reward for information leading to the arrest of the main suspect in the country's worst ever bombing. The words on top of the sketch read, "Criminal Record Registration Division", and the words on the right side of the billboard read, "Award for arrest 1,000,000 baht. Requesting the cooperation of citizens, if you have seen or have any clues, call 1599". REUTERS/Chaiwat Subprasom

People ride their motorcycles past a digital billboard showing a sketch of the main suspect in Monday's attack on Erawan shrine, in Bangkok, Thailand, August 23, 2015. Thai authorities have tripled to $85,000 a reward for information leading to the arrest of the main suspect in the country's worst ever bombing. The words on top of the sketch read, "Criminal Record Registration Division", and the words on the right side of the billboard read, "Award for arrest 1,000,000 baht. Requesting the cooperation of citizens, if you have seen or have any clues, call 1599". REUTERS/Chaiwat Subprasom

MSgt Steven Bennett (L), NCOIC of the Boundary Workshop and SSgt Michael James talk the 561st Network Operations Squadron (NOS), at Petersen Air Force Base in Colorado Springs, Colorado July 20, 2015. The 561st NOS executes defensive cyber operations in response to U.S. Cyber Command orders and intelligence based threats. REUTERS/Rick Wilking

A U.S. Air Force airman works at the 561st Network Operations Squadron (NOS) under the data wall with screens blanked during a reporter's visit at Petersen Air Force Base in Colorado Springs, Colorado July 20, 2015. The 561st NOS executes defensive cyber operations in response to U.S. Cyber Command orders and intelligence based threats. REUTERS/Rick Wilking TPX IMAGES OF THE DAY

A zombie character from the video game "Plants vs. Zombies: Garden Warfare 2" appears on stage during Electronic Arts media briefing before the opening day of the Electronic Entertainment Expo, or E3, at the Shrine Auditorium in Los Angeles, California June 15, 2015. REUTERS/Kevork Djansezian

The "Plants vs. Zombies: Garden Warfare 2" video game, developed by PopCap Games and published by Electronic Arts, is seen during game publisher Microsoft's Xbox media briefing before the opening day of the Electronic Entertainment Expo, or E3, in Los Angeles, California, United States, June 15, 2015. REUTERS/Lucy Nicholson

Members of volunteer group Hisbah screen Muslim worshippers heading for Friday prayers in Miyetti, Gombe January 30, 2015. Volunteers are trying to heighten security around several mosques in Gombe following an attack outside a mosque during prayers by Boko Haram militants. REUTERS/ Afolabi Sotunde (NIGERIA - Tags: CIVIL UNREST)

Images of brothers Cherif Kouachi (L) and Said Kouachi, who carried out the Charlie Hebdo attack, are displayed on televisions at an electronics shop in Sanaa January 14, 2015, showing a message which purports to show Al Qaeda in Yemen claiming responsibility for the attack on the French satirical newspaper. Al Qaeda in Yemen claimed responsibility for the attack on French satirical newspaper Charlie Hebdo, saying it was ordered by the Islamist militant group's leadership for insulting the Prophet Mohammad, according to a video posted on YouTube. Gunmen killed a total of 17 people in three days of violence that began when they opened fire at Charlie Hebdo in revenge for its past publication of satirical images of the Prophet. It was not immediately possible to verify the authenticity of the recording, which carried the logo of al Qaeda's media group al-Malahem. REUTERS/Khaled Abdullah (YEMEN - Tags: POLITICS CIVIL UNREST BUSINESS TPX IMAGES OF THE DAY)

Department of Homeland Security workers at the National Cybersecurity and Communications Integration Center in Arlington, Virginia, January 13, 2015. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS SCIENCE TECHNOLOGY CRIME LAW MILITARY)

A Department of Homeland Security worker listens to U.S. President Barack Obama talk at the National Cybersecurity and Communications Integration Center in Arlington, Virginia, January 13, 2015. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS SCIENCE TECHNOLOGY CRIME LAW MILITARY)

A man with a gun and a metal detector poses for photographers (unseen) while he stands outside a school after it reopened in Peshawar January 12, 2015. Children streamed back to school across Pakistan on Monday in an anxious start to a new term following last month's massacre of 134 students at an army-run school in the volatile northwestern city of Peshawar. Most schools across the country of 180 million had been shut until Monday for an extended winter break in the aftermath of the Dec. 16 attack when Taliban militants broke into Army Public School and methodically killed the children. REUTERS/Khuram Parvez (PAKISTAN - Tags: EDUCATION CIVIL UNREST)

A youth holds a mobile phone bearing a sign that reads, "I am Charlie" during a vigil to pay tribute to the victims of a shooting by gunmen at the offices of weekly satirical magazine Charlie Hebdo in Paris, at Trafalgar Square in London January 7, 2015. Hooded gunmen stormed the Paris offices of the weekly satirical magazine known for lampooning Islam and other religions, shooting dead at least 12 people, including two police officers, in the worst militant attack on French soil in decades. REUTERS/Stefan Wermuth (BRITAIN - Tags: POLITICS CRIME LAW CIVIL UNREST MEDIA)

People pose in front of a display showing the word 'cyber' in binary code, in this picture illustration taken in Zenica December 27, 2014. A previously undisclosed hacking campaign against military targets in Israel and Europe is probably backed by a country that misused security-testing software to cover its tracks and enhance its capability, researchers said. Picture taken December 27, 2014. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: SCIENCE TECHNOLOGY CRIME LAW)

A man takes a photo of a truck carrying part of a wing from Malaysia Airlines flight MH17 in Donetsk downtown, the territory controlled by the self-proclaimed Donetsk People's Republic, eastern Ukraine, November 21, 2014. REUTERS/Antonio Bronic (UKRAINE - Tags: CIVIL UNREST TRANSPORT CONFLICT)

A spectator photographs poppies on the Tomb of the Unknown Soldier following Remembrance Day ceremonies at the National War Memorial in Ottawa November 11, 2014. REUTERS/Blair Gable (CANADA - Tags: POLITICS MILITARY ANNIVERSARY CONFLICT)

Colombian systems programmer Juan Pico works on the video game "Adios a las Armas" (Farewell to Arms) in Bogota September 4, 2014. Colombians will soon be able to sit around a virtual negotiating table as Marxist FARC rebels or the government to thrash out an end to 50 years of war in a video game mirroring complex real life talks now under way to restore peace to the country. "Adios a las Armas," or "Farewell to Arms," a finalist in a government competition in July for non-violent video games, aims to raise awareness about a peace deal being negotiated in Cuba which voters will back or reject in a referendum. Picture taken September 4, 2014. REUTERS/Jose Miguel Gomez (COLOMBIA - Tags: CONFLICT SOCIETY)

Colombian systems programmer Camilo Paez works on the video game "Adios a las Armas" (Farewell to Arms) in Bogota September 4, 2014. Colombians will soon be able to sit around a virtual negotiating table as Marxist FARC rebels or the government to thrash out an end to 50 years of war in a video game mirroring complex real life talks now under way to restore peace to the country."Adios a las Armas," or "Farewell to Arms," a finalist in a government competition in July for non-violent video games, aims to raise awareness about a peace deal being negotiated in Cuba which voters will back or reject in a referendum. Picture taken September 4, 2014. REUTERS/Jose Miguel Gomez (COLOMBIA - Tags: CONFLICT SOCIETY)

People walk under boards displaying currency exchange rates in Moscow, September 2, 2014. Russian assets fell on Monday, with the rouble hitting a fresh record low against the dollar after Europe and the United States accused Russia of direct military involvement in Ukraine. REUTERS/Sergei Karpukhin (RUSSIA - Tags: BUSINESS POLITICS CIVIL UNREST CONFLICT)

Utkarsh Sanghi, a security engineer at Google, works in a hallway during the Black Hat USA 2014 hacker conference at the Mandalay Bay Convention Center in Las Vegas, Nevada August 6, 2014. REUTERS/Steve Marcus (UNITED STATES - Tags: SCIENCE TECHNOLOGY POLITICS BUSINESS)

Tani Currin, marketing events manager for computer security software and hardware developer Sophos, holds an "anti-selfie" mask during the Black Hat USA 2014 hacker conference at the Mandalay Bay Convention Center in Las Vegas, Nevada August 5, 2014. The mask is part of a privacy awareness marketing campaign, she said. Sophos is a developer of computer security software and hardware. REUTERS/Steve Marcus (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS SOCIETY)

A protester holds her smartphone displaying the phrase "NO WAR" at a rally against Japan's Prime Minister Shinzo Abe's push to expand Japan's military role in front of Abe's official residence in Tokyo July 1, 2014. Abe's cabinet adopted on Tuesday a resolution dropping a ban that has kept the military from fighting overseas since World War Two, Defence Minister Itsunori Onodera confirmed, a dramatic step away from post-war pacifism and a political victory for the conservative premier. REUTERS/Yuya Shino (JAPAN - Tags: CIVIL UNREST POLITICS MILITARY)

An explosive investigator carries a bomb detector as the police search for possible bombs in front of the presidential palace in Cairo June 30, 2014. Two Egyptian police officers were killed on Monday while trying to defuse makeshift bombs planted near Cairo's presidential palace by Islamist militants close to the anniversary of the army's overthrow of an elected Islamist president. REUTERS/Asmaa Waguih (EGYPT - Tags: POLITICS CIVIL UNREST CRIME LAW)

Gamers line up under a "Call of Duty: Advanced Warfare" game display during the 2014 Electronic Entertainment Expo, known as E3, in Los Angeles, California June 11, 2014. REUTERS/Jonathan Alcorn (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY SOCIETY)

Attendees walk pass a giant billboard promoting the new multiplayer action game "Call of Duty: Advanced Warfare" at the Activision booth during the 2014 Electronic Entertainment Expo, known as E3, in Los Angeles, California June 10, 2014. REUTERS/Kevork Djansezian (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS SOCIETY)

An attendee poses with men dressed as characters from the new multiplayer action game "Call of Duty: Advanced Warfare", in front of the Activision booth at the 2014 Electronic Entertainment Expo, known as E3, in Los Angeles, California June 10, 2014. REUTERS/Kevork Djansezian (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS SOCIETY)

Microsoft employee Sammy Ng wears an Xbox game controller as a fascinator as she watches a trailer of the new multiplayer action game "Call of Duty: Advanced Warfare" in the Activision booth at the 2014 Electronic Entertainment Expo, known as E3, in Los Angeles, California June 10, 2014. REUTERS/Kevork Djansezian (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS SOCIETY)

Attendees watch a trailer of the new multiplayer action game "Call of Duty: Advanced Warfare" in the Activision booth at the 2014 Electronic Entertainment Expo, known as E3, in Los Angeles, California June 10, 2014. REUTERS/Kevork Djansezian (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS SOCIETY)

French President Francois Hollande is photographed by a guest with a smart phone at a ceremony to mark the 99th anniversary of the mass killing of Armenians by Ottoman Turks during World War I in Paris April 24, 2014. REUTERS/Alain Jocard/Pool (FRANCE - Tags: POLITICS ANNIVERSARY)

A Seattle Seahawks fan goes through security before the start of the NFL Super Bowl XLVIII football game in East Rutherford, New Jersey, February 2, 2014. REUTERS/Andrew Kelly (UNITED STATES - Tags: SPORT FOOTBALL)

A man undergoes a metal detector as people wait for New Year's Eve celebrations in Times Square in New York, December 31, 2013. REUTERS/Zoran Milich (UNITED STATES - Tags: SOCIETY ANNIVERSARY)

Security personnel and policemen check a man and his belongings in the main railway station in Volgograd December 31, 2013. President Vladimir Putin on Tuesday vowed to annihilate all "terrorists" following two deadly bomb attacks in the southern Russian city of Volgograd that raised security fears ahead of the Winter Olympics.REUTERS/Vasily Fedosenko (RUSSIA - Tags: CIVIL UNREST CRIME LAW DISASTER TRANSPORT)

New York Police Department officers perform a security sweep on runners arriving to take part in the New York City Marathon, November 3, 2013. REUTERS/Lucas Jackson (UNITED STATES - Tags: SPORT ATHLETICS)

A Syrian army soldier loyal to Syria's President Bashar al-Assad checks for mines during what they said was military operation on the road to Khanaser town to clean the roads from mines and improvised explosives in Al-Qabtin in Aleppo province October 8, 2013. Picture taken October 8, 2013. REUTERS/George Ourfalian (SYRIA - Tags: CONFLICT MILITARY)

A security official uses a metal detector to survey the site of a bomb blast in the outskirts of Peshawar October 7, 2013. A bomb that exploded near a polio vaccination team in the volatile northwestern Pakistani city of Peshawar on Monday killed at least two people, and possibly as many as six, police said, the latest in a string of attacks against health workers. REUTERS/Fayaz Aziz (PAKISTAN - Tags: CIVIL UNREST CRIME LAW HEALTH)

Participants from government ministries and agencies take part in the Cyber Defense Exercise with Recurrence (CYDER) in Tokyo September 25, 2013. Civil servants from across Japan recently gathered at Japan's Interior Ministry for the first time to train to defend themselves against a cyber assault. Japan has no central agency tasked with defending the nation in cyberspace, and technicians from Japan's key ministries have been brought in to test their skills. Officials say the threat from hackers is rising, and upping Japan's game is increasingly urgent. Picture taken September 25, 2013. REUTERS/Toru Hanai (JAPAN - Tags: POLITICS MILITARY SCIENCE TECHNOLOGY)

A member of the 'Ansar Dimachk' Brigade, part of the 'Asood Allah' Brigade which operates under the Free Syrian Army, uses an iPad during preparations to fire a homemade mortar at one of the battlefronts in Jobar, Damascus September 15, 2013. REUTERS/ Mohamed Abdullah (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT TPX IMAGES OF THE DAY) FOR BEST QUALITY IMAGE: ALSO SEE GM1E99O1RH801.

A protester holds a poster depicting German Chancellor Angela Merkel as he attends a demonstration against secret monitoring programmes PRISM, TEMPORA, INDECT and showing solidarity with whistleblowers Edward Snowden, Bradley Manning and others in front of Berlin's Brandenburg gate July 27, 2013. REUTERS/Pawel Kopczynski (GERMANY - Tags: CRIME LAW POLITICS CIVIL UNREST)

A live chat of Edward Snowden, former contractor at the National Security Agency (NSA), is monitored by Tom Grundy, co-organizer of a rally that was held on Saturday supporting Snowden, on a screen at his home in Hong Kong June 17, 2013. Snowden, the American who leaked details about U.S. National Security Agency surveillance programs, said on Monday he decided to disclose the information after observing "a continuing litany of lies" from senior officials to Congress. REUTERS/Bobby Yip (CHINA - Tags: POLITICS CRIME LAW SCIENCE TECHNOLOGY)

Protesters supporting Edward Snowden, a contractor at the National Security Agency (NSA), hold a photo of Snowden during a demonstration outside the U.S. Consulate in Hong Kong June 13, 2013. China's Foreign Ministry offered no details on Thursday on Snowden, the National Security Agency contractor who revealed the U.S. government's top-secret monitoring of phone and Internet data and who is in hiding in Hong Kong. REUTERS/Bobby Yip (CHINA - Tags: POLITICS SCIENCE TECHNOLOGY CIVIL UNREST TPX IMAGES OF THE DAY)

General Keith Alexander, commander of the U.S. Cyber Command, director of the National Security Agency (NSA) and chief of the Central Security Service (CSS), arrives at the Senate Appropriations Committee hearing on Cybersecurity: Preparing for and Responding to the Enduring Threat, on Capitol Hill in Washington June 12, 2013. REUTERS/Yuri Gripas (UNITED STATES - Tags: POLITICS MILITARY SCIENCE TECHNOLOGY TPX IMAGES OF THE DAY)

A member of the U.S. military performs a security check on an attendee before the running of the 139th Kentucky Derby horse race at Churchill Downs in Louisville, Kentucky, May 4, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT HORSE RACING MILITARY)

A man types on a computer keyboard in Warsaw in this February 28, 2013 illustration file picture. One of the largest ever cyber attacks is slowing global internet services after an organisation blocking "spam" content became a target, with some experts saying the disruption could get worse. To match INTERNET-ATTACK/ REUTERS/Kacper Pempel/Files (POLAND - Tags: BUSINESS SCIENCE TECHNOLOGY)

A woman from the countryside practises searching for landmines during a training session involving mock landmines in El Retiro, Antioquia January 23, 2013. A law allowing civil organizations to carry out mine clearance in Colombia was approved in December 2010. After carrying out extensive survey operations of minefields and conducting training in detection and demining for people in most affected areas over the past two years, the British America HALO Trust is ready to establish a program to clear large areas of the country of mines to help Colombia meet its obligations under the Ottawa Treaty, according to the non-governmental organisation. REUTERS/Albeiro Lopera (COLOMBIA - Tags: CONFLICT MILITARY POLITICS)