Russian President Dmitry Medvedev smiles during his joint news conference with British Prime Minister David Cameron, unseen, in the Kremlin in Moscow, Monday, Sept. 12, 2011. British Prime Minister David Cameron insisted Monday that Russia and Britain can overcome sharp differences in their relations, including the 2006 poisoning death of a Kremlin critic in London, to seal new trading ties and help promote stability in the wake of the Arab Spring. (AP Photo/Ivan Sekretarev)