Prime Minister Manmohan Singh today returned home after attending the UN Summit on Climate Change in Copenhagen where a US-brokered deal with India and other emerging countries that places no legally-binding emission cuts on developed countries ran into trouble.<br/><br/>US and emerging economies including India struck deal to tackle global warming. Hours after high drama at the landmark climate summit at Copenhagen, US and BASIC countries – Brazil, South Africa, India and China reached to have legally non-binding with transparency in emission cuts, mitigation targets and finance forming the basis of the common approach. <br/><br/>Prime Minister's Special Envoy on climate change Shyam Saran stayed back to give final touches to the agreement which has the approval of the heads of the States of these countries. The discussions continued till late last night and the final agreement is not yet available. <br/><br/>But the pact ran into rough weather with several developing countries opposing it, saying, it was legally non-binding and set no target for curbing carbon emissions.<br/><br/>President Barack Obama made announcement after extended talks that US has reached a meaningful deal to curb green house gas emissions with this group. German Chanellor Angela Merkel and British Prime Minister Gordon Brown accepted the Copenhagen climate deal, but said they had wanted more. <br/><br/>AIR Correspondent reports that the agreement between the US and BASIC countries was achieved after President Obama took the initiative.<br/>