Bush set for climate change U-turn

Flip-flopper! Then again, he's said a lot of things in past State of the Union adresses that haven't come to fruition.

George Bush is preparing to make a historic shift in his position on global warming when he makes his State of the Union speech later this month, say senior Downing Street officials.

Tony Blair hopes that the new stance by the United States will lead to a breakthrough in international talks on climate change and that the outlines of a successor treaty to the Kyoto agreement, the deal to curb emissions of greenhouse gases which expires in 2012, could now be thrashed out at the G8 summit in June.