BANGKOK, Thailand - UN climate talks ended in a whimper Friday without progress on the pressing issues of emission cuts for wealthy nations or financing for the developing ones, both of which are crucial to reaching a global warming pact.

Negotiations have been deadlocked for months and delegates have raised doubts whether a new climate pact to rein in greenhouse gases can be reached by the time world leaders gather in Copenhagen in December. The pact would replace the Kyoto Protocol, which expires in 2012.

Shayam Saran, India's special envoy for climate change, told reporters said he was "dismayed" that developed nations hadn't announced plans for deep emissions cuts, as he had been expecting.

Even before the two weeks of talks ended Friday, environmentalists were already criticizing governments for leaving the fundamental issues to climate talk to the final meeting in Barcelona next month before world gathers in Copenhagen.

"With only five negotiating days, we can't continue to waste time on missing political mandates," said the WWF's Kim Carstensen.

The United States came under particular criticism for offering little significant contributions during the Bangkok talks -- partly due the fact it has yet to pass domestic climate legislation -- and allowing other nations to hide behind its inaction.

In the U.S., which rejected the Kyoto Protocol because it exempted countries such as India and China from obligations, a bill that passed the House of Representatives would reduce emissions by 17 per cent from 2005 levels -- about 4 per cent below 1990 levels -- by 2020. The Senate is considering its own bill that would cut emissions 20 per cent.

Only Norway announced a new target at the meeting, saying it would reduce by 40 per cent, up from a previous commitment of 30 per cent, by 2020.

Industrialized nations have pledged emission cuts of up to 23 per cent below 1990 levels by 2020 -- far short of the 25 to 40 per cent cuts scientists and activists say are needed to keep temperature increases below two degrees Celsius.

Developing countries have said they want to do their part but have refused to agree on binding targets and want to see more ambitious cuts by the industrialized nations. They won't sign any deal until the West guarantees tens of billions of dollars in financial assistance.