Responding to Foreign Secretary David Miliband's speech at the London School of Economics, Tony Juniper, Executive Director of Friends of the Earth, said: "The Foreign Secretary has set out a cogent analysis of some of the most important challenges facing the international community in the years ahead.

"Our dwindling natural resources - hit by a double whammy' of increased demand for food and fuel, alongside carbon dependency and climate change - are set to transform global politics and create new insecurities and threats.

"Yet in the face of this challenge, much British Government policy is going in the opposite direction.

"While David Miliband is calling for resource conservation and low carbon development, Gordon Brown is pressing OPEC to pump more oil amid fears that resource-saving measures like a tax system that rewards green cars and EU targets on renewable energy will fall by the wayside."