People play video games on mobile phone-shaped screens at Tokyo Game Show 2016 in Chiba, east of Tokyo, Japan, September 15, 2016. REUTERS/Kim Kyung-Hoon

U.N. vehicles enter Syria from Turkey at Cilvegozu border gate, located opposite the Syrian commercial crossing point Bab al-Hawa in Reyhanli, Hatay province, Turkey, September 16, 2016. REUTERS/Osman Orsal

U.N. vehicles enter Syria from Turkey at Cilvegozu border gate, located opposite the Syrian commercial crossing point Bab al-Hawa in Reyhanli, Hatay province, Turkey, September 16, 2016. REUTERS/Osman Orsal

Commercial Turkish trucks wait to cross to Syria near the Cilvegozu border gate, located opposite the Syrian commercial crossing point Bab al-Hawa in Reyhanli, Hatay province, Turkey, September 16, 2016. REUTERS/Osman Orsal

Commercial Turkish trucks wait to cross to Syria near the Cilvegozu border gate, located opposite the Syrian commercial crossing point Bab al-Hawa in Reyhanli, Hatay province, Turkey, September 16, 2016. REUTERS/Osman Orsal

Commercial Turkish trucks wait to cross to Syria near the Cilvegozu border gate, located opposite the Syrian commercial crossing point Bab al-Hawa in Reyhanli, Hatay province, Turkey, September 16, 2016. REUTERS/Osman Orsal

A gas flare on an oil production platform in the Soroush oil fields is seen alongside an Iranian flag in the Gulf July 25, 2005. REUTERS/Raheb Homavandi/File Photo

Gas flares from an oil production platform at the Soroush oil fields in the Persian Gulf, south of the capital Tehran, July 25, 2005. REUTERS/Raheb Homavandi/File Photo