Leaders of the Collective Security Treaty Organisation (CSTO) (L-R clockwise) Tajik President Imomali Rakhmon, Russian President Dmitry Medvedev, Armenian President Serzh Sarksyan, General Secretary of the CSTO Nikolai Bordyuzha, Belarusian President Alexander Lukashenko, Kazakh President Nursultan Nazarbayev and Kyrgyz President Roza Otunbayeva attend an informal meeting in Yerevan August 20, 2010...
