Bloomberg: The U.S. and developing nations agreed to negotiate a new global-warming treaty by 2009, after the U.S. reversed its position during all-night talks in Bali, Indonesia, and accepted a compromise agenda. Delegates from 187 countries hammered out the plan that will guide negotiations on a climate accord for the next two years. The U.S. succeeded in diluting a call for mandatory cuts in emissions of greenhouse gases blamed for climate change, while China and 130 developing countries …