Iranian flags are seen at a petrol station in Tehran, Iran, January 25, 2016. REUTERS/Raheb Homavandi/TIMA

Iranian President Hassan Rouhani attends an interview with state TV in Tehran, Iran February 2, 2016. REUTERS/President.ir/Handout via Reuters

A woman walks past an election campaign poster of Vladimir Zhirinovsky, leader of Russian Liberal Democratic party, ahead of September 18 parliamentary elections in the Black Sea port of Sevastopol, Crimea, September 16, 2016. REUTERS/Pavel Rebrov

People walk past an election campaign poster of Vladimir Komoyedov, a candidate running for deputy, ahead of September 18 parliamentary elections in the Black Sea port of Sevastopol, Crimea, September 16, 2016. REUTERS/Pavel Rebrov

Girls walk past election campaign posters of candidates running for deputies, ahead of September 18 parliamentary elections in the Black Sea port of Sevastopol, Crimea, September 16, 2016. REUTERS/Pavel Rebrov

The logo of Samsung Electronics is seen at its headquarters in Seoul, South Korea, July 4, 2016. REUTERS/Kim Hong-Ji/File Photo

New York City firefighters stand near the site of an explosion in the Chelsea neighborhood of Manhattan, New York, U.S. September 17, 2016. REUTERS/Rashid Umar Abbasi

New York City police and firefighters stand near the site of an explosion in the Chelsea neighborhood of Manhattan, New York, U.S. September 17, 2016. REUTERS/Rashid Umar Abbasi