Agence France-Presse: China will pledge to “actively join” a post-Kyoto Protocol deal on tackling global warming, in a planned joint statement with Japan during President Hu Jintao’s visit here starting Tuesday, officials said. Multilateral negotiations are underway for completing a pact by the end of next year to follow the landmark Kyoto Protocol, which requires rich nations to slash greenhouse gas emissions blamed for climate change. The United States and some other Western states have …