Reuters: A “Copenhagen Accord” for fighting climate change has won only half-hearted support from major emerging nations led by China and India, leaving question marks over a pact they agreed with the United States. Indian officials said the BASIC group — China, India, South Africa and Brazil — feared that ringing endorsement of the accord could detract from the 1992 U.N. Climate Convention, which says rich nations must lead action to slow global warming. “There seems a deliberate …