US President Barack Obama answers a question on Syria during a joint press conference with Swedish Prime Minister in Stockholm on September 4, 2013. (JEWEL SAMAD/AFP/Getty Images)
Flags of the European Union member states hang inside the Council of the European Union's Lex building on February 18, 2016 in Brussels, Belgium. (Dan Kitwood/Getty Images)
Turkish President Recep Tayyip Erdogan addresses citizens outside his residence at Kisikli Neighborhood following the failed coup attempt, in Istanbul, Turkey on July 16, 2016. (Elif Ozturk/Anadolu Agency/Getty Images)
Russia's Foreign Minister Sergei Lavrov (L) and US Secretary of State John Kerry talking during an International Syria Support Group meeting at the Lotte New York Palace Hotel. (Valery Sharifulin\TASS via Getty Images)