December 20, 2011. Russia's President Dmitri Medvedev, foreground, right, attending the ceremony of signing joint documents following the Collective Security Treaty Organization summit. Foreground, from left: Russia's Defense Minister Anatoly Serdyukov and Russia's Security Council Secretary Nikolai Patrushev.

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President Emomali Rakhmon of Tadjikistan attending the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011.

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President Alexander Lukashenko of Belarus attending the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011.

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Russian Security Council Secretary Nikolai Patrushev attending the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011.

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President Dmitry Medvedev (second left, foreground) attending the ceremony of signing joint documents following the Collective Security Treaty Organization summit, December 20, 2011. Right, foreground: Foreign Minister Sergei Lavrov. Right, background: Sergei Prikhodko, the president's aide.

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From left: President Dmitry Medvedev of Russia and Nursultan Nazarbayev of Kazakhstan attending a joint photocall after the Collective Security Treaty Organization summit in a narrow format, December 20, 2011.

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From left: Russia's President Dmitry Medvedev and Foreign Minister Sergei Lavrov attending the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011.

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President Islam Karimov of Uzbekistan attending the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011.

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President Serge Sargsyan of Armenia attending the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011.

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From left: Russia's President Dmitry Medvedev and Foreign Minister Sergei Lavrov attending the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011.

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From left: Defense Minister Anatoly Serdyukov and Security Council Secretary Nikolai Patrushev attending the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011.

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President Dmitry Medvedev (center) attending the Collective Security Treaty Organization summit with enlarged attendance, December 20, 2011. Left: Russian Security Council Secretary Nikolai Patrushev. Right: Foreign Minister Sergei Lavrov.

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President Dmitry Medvedev (center, foreground) to attend the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011. Left, foreground: Kazakhstan President Nursulatan Nazarbayev. Right, foreground: Belarus President Alexander Lukashenko.

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President Dmitry Medvedev (center, foreground) to attend the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011. Left, background: Kazakhstan President Nursulatan Nazarbayev. Right, background: Belarus President Alexander Lukashenko. Left, background: Tadjikistan President Emomali Rakhmon. Right, background: Uzbekistan President Islam Karimov.

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President Dmitry Medvedev to attend a Kremlin press conference on the results of the Collective Security Treaty Organization summit, December 20, 2011.

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President Dmitry Medvedev (center, background) attending the Collective Security Treaty Organization summit with enlarged attendance, December 20, 2011.

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President Dmitry Medvedev (center, background) attending the Collective Security Treaty Organization summit with enlarged attendance, December 20, 2011.

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President Dmitry Medvedev (fourth right) attending a joint photocall after the Collective Security Treaty Organization summit in a narrow format, December 20, 2011. From left: Presidents Serge Sargsyan of Armenia, Alexander Lukashenko of Belarus, Nursultan Nazarbayev of Kazakhstan, and Almazbek Atambayev of Kyrgystan. From right: Nikolai Bordyuzha, Secretary-General of the Collective Security Treaty Organization, Islam Karimov, President of Uzbekistan, and Emomali Rakhmon, President of Tadjikistan.

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President Dmitry Medvedev (center, foreground) to attend the Collective Security Treaty Organization summit with enlarged attendance of delegations, December 20, 2011. Left, foreground: Kazakhstan President Nursulatan Nazarbayev. Right: Belarus President Alexander Lukashenko. Left, background: Tadjikistan President Emomali Rakhmon.

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Russian President Dmitry Medvedev,far left, at the Collective Security Treaty Organization (CSTO) narrow format summit. From left in the foreground: President of Kazakhstan Nursultan Nazarbayev, at left in the background: Kyrgyzstan's President Almazbek Atambaev; far right: Tajikistan's President Enomali Rakhmon, 20 December 2011.

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Russian President Dmitry Medvedev, second from left in the background, at the Collective Security Treaty Organization (CSTO) narrow format summit. From left in the foreground: President of Kazakhstan Nursultan Nazarbayev,CSTO Secretary General Nikolay Bordyuzha, President of Belarus Alexander Lukashenko, President of Armenia Srzh Sargsyan; aat left in the background: Kyrgyzstan's President Almazbek Atambaev; from left in the background: Uzbekistan's President Islam Karimov, Tajikistan's President Enomali Rakhmon, 20 December 2011.

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From left: Russian President Dmitry Medvedev welcoming his Kyrgyz counterpart Almazbek Atambayev before the beginning of the Collective Security Treaty Organization summit (narrow format), December 20, 2011.

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From left: Russian President Dmitry Medvedev welcomes President of Kyrgyzstan Almazbek Atambaev ahead of the Collective Security Treaty Organization (CSTO) narrow format summit, 20 December 2011.

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From left: Russian President Dmitry Medvedev welcomes President of Tajikistan Enomali Rakhmon ahead of the Collective Security Treaty Organization (CSTO) narrow format summit, 20 December 2011.

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From left: Russian President Dmitry Medvedev welcomes President of Uzbekistan Islam Karimov ahead of the Collective Security Treaty Organization (CSTO) narrow format summit, 20 December 2011.

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From left: Russian President Dmitry Medvedev welcoming his Kazakh counterpart Nursultan Nazarbayev before the beginning of the Collective Security Treaty Organization summit (narrow format), DECEMBER 20, 2011.

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From left: Russian President Dmitry Medvedev welcomes President of Kazakhstan Nursultan Nazarbaev ahead of the Collective Security Treaty Organization (CSTO) narrow format summit, 20 December 2011.

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From left: Russian President Dmitry Medvedev welcomes President of Belarus Alexander Lukashenko ahead of the Collective Security Treaty Organization (CSTO) narrow format summit, 20 December 2011.

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From left: Russian President Dmitry Medvedev welcomes President of Belarus Alexander Lukashenko ahead of the Collective Security Treaty Organization (CSTO) narrow format summit, 20 December 2011.

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From left: Russian President Dmitry Medvedev welcomes President of Armenia Serzh Sargsyan ahead of the Collective Security Treaty Organization (CSTO) narrow format summit, 20 December 2011.

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Russian President Dmitry Medvedev ahead of the Collective Security Treaty Organization (CSTO) narrow format summit, 20 December 2011.

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Russian President Dmitry Medvedev, front, ahead of the Collective Security Treaty Organization (CSTO) narrow format summit with Tajikistan's President Enomali Rakhmon, left, and Uzbekistan's President Islam Karimov in the background, 20 December 2011.

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Russian President Dmitry Medvedev, front, ahead of the Collective Security Treaty Organization (CSTO) narrow format summit. From left in the background: Tajikistan's President Enomali Rakhmon, President of Kazakhstan Nursultan Nazarbayev; from left in the third row: Kyrgyzstan's President Almazbek Atambaev, Uzbekistan's President Islam Karimov, 20 December 2011.

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Russian President Dmitry Medvedev, near center, ahead of the Collective Security Treaty Organization (CSTO) summit in the restricted format. From left in the background: Tajikistan's President Enomali Rakhmon, Kyrgyzstan's President Almazbek Atambaev; from right in the background: Uzbekistan's President Islam Karimov, President of Belarus Alexander Lukashenko, 20 December 2011.

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