Associated Press: The United Nations has commended China's "continued strong leadership" for backing a landmark international agreement to curb climate change. Led this year by China, the Group of 20 rich and developing nations issued a statement earlier this week following a meeting in Guangzhou to back the Paris climate accord and pledge domestic measures to bring it to force as soon as possible. Spokesman Stephane Dujarric said Friday that U.N. Secretary-General Ban Ki-moon was "encouraged by the strong political...