Copenhagen

As world leaders promise significant action next year, summit ends in angry exchanges and failure to secure unanimous support for final deal

Brown defends compromise agreement; plans emerge for 2010 climate change meetings

Deal thrashed out at talks condemned as climate change scepticism in action

US, China, India and South Africa agree "meaningful" deal, as confidence grows that wider accord will be signed

Last ditch effort to salvage agreement as Obama meets with Wen Jiabao

Leaked documents reveal negotiations are heading for staggeringly weak agreement

Confusion reigns as UN Secretary-General reportedly asks world leaders to extend their stay in Copenhagen in last-ditch effort to reach agreement

Reports claim bilateral meeting between Obama and Wen has raised hopes for a deal

US President Barack Obama this morning addressed the Climate Change Summit in Copenhagen - here is his speech in full

US president insists movement is needed on all sides to reach workable accord