A migrant stands next to a burned tent at the Moria migrant camp, after a fire that ripped through tents and destroyed containers during violence among residents, on the island of Lesbos, Greece, September 20, 2016. REUTERS/Giorgos Moutafis

A migrant (R) reacts as he walks next to the remains of burned tents at the Moria migrant camp, after a fire that ripped through tents and destroyed containers during violence among residents, on the island of Lesbos, Greece, September 20, 2016. REUTERS/Giorgos Moutafis

Business magnate George Soros arrives to speak at the Open Russia Club in London, Britain June 20, 2016. REUTERS/Luke MacGregor

Damaged aid trucks are pictured after an airstrike on the rebel held Urm al-Kubra town, western Aleppo city, Syria September 20, 2016. REUTERS/Ammar Abdullah

Damaged Red Cross and Red Crescent medical supplies lie inside a warehouse after an airstrike on the rebel held Urm al-Kubra town, western Aleppo city, Syria September 20, 2016. REUTERS/Ammar Abdullah

Damaged Red Cross and Red Crescent medical supplies lie inside a warehouse after an airstrike on the rebel held Urm al-Kubra town, western Aleppo city, Syria September 20, 2016. REUTERS/Ammar Abdullah

A Civil Defence member and a man put out a fire after an airstrike on the rebel held Urm al-Kubra town, western Aleppo city, Syria September 20, 2016. REUTERS/Ammar Abdullah

Men drive a motorcycle near a damaged aid truck after an airstrike on the rebel held Urm al-Kubra town, western Aleppo city, Syria September 20, 2016. REUTERS/Ammar Abdullah