The US administration is preparing for a historic u-turn on its position on global warming when President Bush makes his State of the Union speech later this month according to senior Downing Street officials.

The new stance on Global Warming is hoped to be a steppingstone towards a breakthrough in international talks on climate change and an outline of a successor treaty to the Kyoto agreement.

The new Global Warming strategy will force American industry and consumers to start conserving energy and curbing pollution details of which will be worked out at the forthcoming G8 meeting in June.