Bangkok climate conference sounds alarm ahead of UN summit

Time is running out to save the Paris Agreement, UN climate experts warned Tuesday at a key Bangkok meeting, as rich nations were accused of shirking their responsibility for environmental damage.

The six-day UN conference opened with an urgent plea from delegates to finalise a "rule book" governing the Paris Agreement, the most ambitious global pact yet, to address the impacts of climate change.

The rule book will have guidelines for the treaty's 197 signatories on how to provide support to developing countries worst affected, and manage the impact of climate change.

If nations cannot reach an agreement by a December summit in Poland -- known as COP24 -- the Paris Agreement, carved out in 2015, will be at risk.

"The credibility of the process... is at stake," Michal Kurtyka, president designate of COP24, said at the opening of Tuesday's meeting.

"We are not moving as swiftly as we can," he added. "We need concrete propositions and solutions now."