October 14, 2016. Russian President Vladimir Putin during a group photo session of the CSTO heads of state in Yerevan. From left: Sergei Bordyuzha, Secretary General of the Collective Security Treaty Organization (CSTO), President of Belarus Alexander Lukashenko, President of Kyrgyzstan Almazbek Atambayev and President of Armenia Serzh Sargsyan. From right: Prime Minister of Kazakhstan Bakytzhan Sagintaev and President of Tajikistan Enomali Rakhmon.