Agence France-Presse: Asia-Pacific powers including the United States, China and Russia are expected to call next week for sweeping cuts in greenhouse gas emissions ahead of a crunch climate meeting in Copenhagen. US President Barack Obama and 20 other regional leaders will also say it is too early to wean their economies off stimulus spending, according to a draft summit communique obtained by AFP on Friday. At their November 14-15 summit in Singapore, the leaders of the Asia-Pacific Economic …