Last week, Russian President Vladimir Putin announced that Rosneft, the state-owned oil company, had struck one of the largest oil deals in history. Under the $270 billion deal, Russia will send oil to China for 25 years, beginning around 2015. In this video, Fool.com contributor Aimee Duffy takes a look at what this deal could mean for oil exploration in Russia, and highlights another recent deal that China has entered that could also have important geopolitical implications.