US President Barack Obama is trying to salvage chances for an agreement on climate change mitigation this month by meeting with the leaders of China and India, the AFP reported. Obama will begin his trip to China on Sunday, then meet with Indian Prime Minister Manmohan Singh when he comes to Washington next week. US Energy Secretary Steven Chu has also been tasked with visiting China and India to try to make headway on a deal. The intransingence of the world’s three most populous nations – and the world’s largest two producers of greenhouse gases – has provoked skepticism that any substantive agreement can be reached. German Chancellor Angela Merkel has threatened to boycott the Copenhagen negotiations if the three nations cannot manage to adjust their positions.