'Very difficult' issues dog climate talks: Kerry

John Kerry (right) says world powers must still make tough decisions to agree a global climate pact that will head off the threat of global warmingWorld powers must still make tough decisions to agree a global climate pact that will head off the threat of global warming, US Secretary of State John Kerry said Friday. Kerry would not be drawn on which issues in particular had become sticking points, but after speaking to reporters he went to meet Indian Environment Minister Prakash Javadekar. India has demanded that developed countries like the United States shoulder more of the cost that countries face in adapting to the effects of climate change.

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