Armenia's President Serzh Sargsyan (L-R), Belarus' President Alexander Lukashenko, Kazakhstan's President Nursultan Nazarbayev, Russia's President Vladimir Putin and Kyrgyzstan's President Almazbek Atambayev pose for a family photo during a meeting of the heads of state of the Supreme Eurasian Economic Council at the Burabai resort near Astana, Kazakhstan, October 16, 2015. The meeting of ex-Soviet leaders, including Putin, have agreed to create a joint task force to defend external borders in crisis situations amid turmoil in Afghanistan. REUTERS/Aleksey Nikolskyi/RIA Novosti/Kremlin ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. - RTS4PZA