World leaders join the largest ever climate talks last evening as ministers scrambled to rescue troubled negotiations on a pact to thrash out a pact to deal with the challenge of global warming.<br/><br/>Police using truncheons and pepper spray detained 230 people outside the conference centre in Copenhagen as hundreds of protesters demanding tough action on climate change tried to push through barricades.<br/> <br/>The environment minister Mr. Jairam Ramesh said the Kyoto pact was in intensive care unit. Mr. Jairam Ramesh said developed countries are vehemently opposing the protocol and some of them wanted a single new accord to fight global warming. He added that Developing countries want rich nations to be held to their Kyoto obligations, and sign up to a second round of tougher commitments from 2013, as the current pact provides for. Amidst discussions and arguments and counter arguments the Danish Environment Minister resigned from the presidency of the meet ahead of the summit talks. She however will continue to be part of the discussions.<br/> <br/>A formal summit of more than 120 world leaders will be held today and day after to try to break the deadlock on who should cut greenhouse gas emissions, by how much and who should pay. The Prime Minister Dr. Manmohan Singh is arriving to participate in the summit. The US President and the Chinese Premier are also expected to reach Danish capital to join the deliberations. Ahead of his visit US President Barack Obama expressed confidence that a climate deal can be clinched. British Prime Minister Gordown Brown who is in Copenhagen warned that ending with out deal is dangerous as the future of humanity is at stake. UN secretary general Ban Ki Moon says that all nations needed to set tougher targets. He sounded confident that the deal will be finalised before the summit concludes. China told the plenary it was resolutely opposed to any attempts or efforts to water down or scrap Kyoto. AIR correspondent Vijay Raina quoting some delegates reports that an agreement on the crucial issue is far away. Developing countries are demanding rich nations promise much deeper emissions cuts and substantial money to help them fight climate change and green their economies. China, the United States, Russia and India have all set goals for curbing emissions in recent months. A major hurdle is that the United States has not yet passed legislation capping its emissions — unlike all its main industrial allies.<br/><br/>Meanwhile, Prime Minister Dr Manmohan Singh leaves for Copenhagen this afternoon to participate in the heads of state meeting at the climate summit. where he will renew India’s stand for a balanced, equitable and ambitious outcome at the conference.<br/>New Delhi has maintained that it is continuing to work with other countries for a good outcome at the summit. Briefing reporters, Foreign Secretary Mrs. Nirupama Rao said Prime Minister’s participation at the summit demonstrates how seriously India views the challenge of climate change and importance that is attached to intensifying international cooperation to address it. She said New Delhi expects the summit to provide space for its accelerated economic and social development to eradicate poverty.<br/> <br/>