The remains of a burned car is seen outside Gabon's National Assembly which was set on fire during unrest following the disputed reelection of President Ali Bongo earlier this month in Libreville, Gabon, September 20, 2016. REUTERS/Edward McAllister

The logo of the Organization of the Petroleum Exporting Countries (OPEC) is pictured at its headquarters in Vienna, Austria, August 21, 2015. REUTERS/Heinz-Peter Bader

President Hassan Rouhani of Iran addresses the 71st United Nations General Assembly in Manhattan, New York, U.S. September 22, 2016. REUTERS/Carlo Allegri

An elderly man uses a magnifiying glass to see the description on a pack of medicine at a pharmacy in Dandong, Liaoning province, China, March 30, 2011. REUTERS/Jacky Chen/File Photo

Shelves displaying medicines are seen at a pharmacy in Shanghai, China, November 27, 2015. REUTERS/Aly Song/File Photo

Police organize a line of refugees on a stairway leading up to trains arriving from Denmark at the Hyllie train station outside Malmo, Sweden, November 19, 2015. REUTERS/Johan Nilsson/TT News Agency/File Photo

A man walks on a logo of the Monte Dei Paschi Di Siena bank in Rome, Italy September 24, 2013. REUTERS/Alessandro Bianchi/File Photo

An election commission member damages unused ballots with a wood chopper at a polling station in Saransk, Russia, September 18, 2016. REUTERS/Gleb Stolyarov