**Key states in Copenhagen have reached a “meaningful agreement” in climate change talks, a US official says.**No country was “entirely satisfied” with the deal, but it was a “historic step forward,” the official added.
The deal was not enough to tackle dangerous climate change but was an important first step, he said.
The two-week summit in the Danish capital had been deadlocked on Friday evening as world leaders tried to hammer out a deal.
Details of the reported agreement emerged after a meeting involving US President Barack Obama, Chinese Premier Wen Jiabao, Indian Prime Minister Manmohan Singh and South African President Jacob Zuma.