Open this photo in gallery: U.S. Special Presidential Envoy for Climate John Kerry, left, shakes hands with Chinese Vice President Han Zheng during a meeting in Beijing, on July 19.Zhang Ling/The Associated Press China is willing to work with Washington on reducing global warming as long as its political demands are met, the country’s vice president told U.S. climate envoy John Kerry on Wednesday. Vice President Han Zheng told Kerry that addressing climate change was “an important aspect of China-U.S. cooperation,” but was predicated on mutual respect, the official Xinhua News Agency reported. He said it must proceed “on the...