#1006991President 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.Sign in or register,to downloadAdd to cartRemove from cartPackage: CSTO summit in KremlinCategories: PoliticsLocation: Moscow, RussiaEvent date: 20.12.2011Date published: 20.12.2011Author: Dmitry AstakhovCredit: SputnikSource: SputnikOriginal: DigitalMedia: JPEG, 3000x2016px, 1.3Mbgeneral viewsession