Russian President Vladimir Putin attends the EAEU and CSTO Summits in Bishkek

BISHKEK, KYRGYZSTAN - APRIL 13: (RUSSIA OUT) L-R: Armenian President Serge Sargsyan, Belarussian President Alexander Lukashenko, Kazakh President Nursultan Nazarbayev, Kyrgyz President Almazbek Atambayev, Russian President Vladimir Putin, Tajik President Emomali Rakhmon and CSTO General Secretary Yuri Khachaturov pose for a photo during the Summit of Collective Security Treaty Organisation (CSTO) at Ala-Archa State residence on April, 14, 2017 in Bishkek, Kyrgyzstan. Leaders of post-Soviet countries has arrived in Bishkek to participate in the summits of Eurasian Economic Union (EAEU) and Collective Security Treaty Organisation (CSTO). (Photo by Mikhail Svetlov/Getty Images)