Reuters: The United States wants to forge a partnership with China, bringing the world’s two biggest emitters of greenhouse gases together to address global warming, Washington’s top climate diplomat said on Wednesday. This bilateral relationship could be a “positive anchor” for overall U.S.-China relations, possibly easing dialogue on such issues as trade and the Korean peninsula, said Todd Stern, the U.S. special envoy for climate change. Stern said he expected no signed document from …