US President Barack Obama has said the US has reached a meaningful deal to curb greenhouse gas emissions with four emerging economies, including India. Speaking at the conclusion of the Copenhagen Climate Change Summit, he, however, warned that it was not enough to battle climate change. A senior Obama administration official said the deal reached by the US, India, China, South Africa and Brazil includes a method for verifying reductions of heat-trapping gases. He said under the agreement, each country also will list the actions they will take to cut global warming pollution by specific amounts.<br/><br/>German Chancellor Angela Merkel and British Prime Minister Gordon Brown accepted the Copenhagen climate deal, but said they had wanted more.<br/><br/>The deal reiterates a goal that G-8 countries set earlier this year on long-term emission cuts and provides a mechanism to help poor countries prepare for climate change. Our correspondent quoting official sources reports, negotiators are still fine tuning the deal. The prime minister's special envoy on Climate change Mr. Shyam Saran is staying back at Copenhagen to workout the finalities on the agreement which has the approval of the Heads of State.<br/><br/>The agreement between the US and BASIC countries was achieved after Obama held talks with leaders of the four countries, including Prime Minister Manmohan Singh. Both Mr. Obama and Dr.Singh delayed their departure from the Danish capital as world leaders went into an extra night of discussions in a bid to hammer out a deal on climate change.<br/><br/>Earlier, New Delhi asserted that any global regime to tackle climate change must take sustainable development into account. Addressing the plenary session of the Climate conference at Copenhagen the Prime Minister Dr. Manmohan Singh said that the outcome of the conference may fall short of expectations but it can become a significant milestone. He called for further negotiations leading to a legal treaty to tackle global warming in 2010. Reacting to the concerted attempts by the rich nations to commit to a date by which its emissions of greenhouse gases (GHG) would peak, Dr Singh said that emissions – mostly carbon dioxide and most of it from industrialised countries and this is leading to climate change .Dr. Singh said that it is already affecting farm output, making droughts, floods and storms more frequent and more severe and raising the sea level. To fight climate change, the Prime Minister emphasised the importance of the Bali Action Plan worked out in 2007. He said the Kyoto Protocol should continue to stand as valid legal instrument. The third major issue, Dr. Singh said, is that any new regime to tackle climate change has to take sustainable development into account. He said that New Delhi has a vital stake in the success of the negotiations and India is among the countries most likely to severely impacted by climate change. Our correspondent covering the summit reports that the speeches given by Chinese premier and the Brazilian President also echoed similar ideas, as Brazil, South Africa, India and China had worked out their strategy just before the session started.<br/>