Reuters: Several developing nations rejected on Saturday a climate deal worked out by President Barack Obama and four major emerging economies, saying it could not become a U.N. blueprint for fighting global warming. Earlier, European Union nations reluctantly agreed to sign up for the accord worked out at a summit of 120 leaders by the United States, China, India, South Africa and Brazil — meant as the first U.N. climate pact since the 1997 Kyoto Protocol. "I regret to inform you that …