Guardian: Rich nations furthered their "conspiracy to divide the developing world" at December’s UN climate summit in Copenhagen, while Canada "connived" and the EU acted "to please the United States", according to an internal document from a Chinese government thinktank obtained by the Guardian. The document, which was written in the immediate aftermath of Copenhagen but has only now come to light, provides the most candid insight yet into Chinese thinking on the fraught summit. "It was …