Spain ? After two years of tough U.N. climate talks often pitting the world’s rich against the poor, negotiators said Friday a new global agreement now rides on industrial nations pledging profound emissions cuts next month in Copenhagen.

Negotiators from industrial nations, including the United States, said eleventh-hour promises are possible and a global warming pact can be reached.

But developing countries complained that pledges so far were nowhere near enough to avoid a catastrophe, and that world leaders need to take part in the 192-nation conference on Dec. 7-18 to cut a meaningful deal.

“Part of the frustration is that a deal is so close … all the elements are there,” said Kevin Conrad, the delegate from Papua New Guinea. “But it’s absolutely conceivable for senior people to come together and spend a week and clean all this up.”