Bonn - A new round of United Nations climate change negotiations kicks off in Bonn on Sunday, as 2,000 delegates from around 180 countries gather in the former German capital.
The 10-day conference is the first of three planned meetings paving the way for December's Copenhagen summit, where final talks are due on a renewal of the Kyoto Protocol, which is set to expire in 2012.
The United States' position will be keenly observed in Bonn, since Washington has recently changed tack on climate change under President Barack Obama.