Britain's Prime Minister David Cameron , Russian President Vladimir Putin , on the steps of 10 Downing Street , in London . 英國首相卡梅倫 ， 俄羅斯總統普京 ， 唐寧街10號 ， 倫敦 。

Aug. 2, 2012.(AP Photo/Stefan Rousseau/PA)

Vladimir Putin and David Cameron visit the Olympic Judo - European Judo Union http://www.eju.net/news/?mode=showNewsItem&id=1771
Cameron takes Putin to watch Olympic judo | www.wftv.com http://www.wftv.com/ap/ap/top-news/cameron-putin-to-trade-blows-watch-olympic-judo/nP8kT/

REUTERS

REUTERS
Photo from Reuters Pictures http://www.daylife.com/photo/07eH1DTfq63wQ?__site=daylife&q=Vladimir+Putin
Photo from Reuters Pictures http://www.daylife.com/photo/08Xw26PadJ4vS?__site=daylife&q=Vladimir+Putin