U.S. First Lady Michelle Obama hosts Broadway Shines A Light on Girls' Education at the Bernard B. Jacobs Theater in Manhattan, New York, U.S., September 19, 2016. REUTERS/Andrew Kelly

Rosen Plevneliev, President of Bulgaria, addresses the 71st session of the United Nations General Assembly at the UN headquarters in New York on September 22, 2016. / AFP PHOTO / DOMINICK REUTERDOMINICK REUTER/AFP/Getty Images

Rosen Plevneliev, President of Bulgaria, addresses the 71st session of the United Nations General Assembly at the UN headquarters in New York on September 22, 2016. / AFP PHOTO / DOMINICK REUTERDOMINICK REUTER/AFP/Getty Images

Siemens AG logo is seen during official opening of headquarters in Munich, Germany, June 24, 2016. REUTERS/Michaela Rehle

Police officers wearing riot gear block a road during protests after police fatally shot Keith Lamont Scott in the parking lot of an apartment complex in Charlotte, North Carolina, September 20, 2016. REUTERS/Adam Rhew/Charlotte Magazine

Military vehicles arrive at the National Guard Armory after NC Gov. Pat McCrory ordered a state of emergency following protests against the police shooting of Keith Scott, in Charlotte, North Carolina, U.S. September 22, 2016. REUTERS/Jason Miczek

A flight test engineer holds an Airbus Group flag after the first flight of the Airbus A320neo (New Engine Option) in Colomiers near Toulouse, France, September 25, 2014. REUTERS/Regis Duvignau/File Photo

Japan's Prime Minister Shinzo Abe and his wife Akie arrive at the Jose Marti International Airport in Havana, Cuba, September 22, 2016. REUTERS/Alexandre Meneghini