We're convinced, for our own self-interest, that the way we use energy, changing it to a more efficient fashion, is essential to our national security, because it helps to reduce our dependence on foreign oil, and helps us deal with someof the dangers posed by climate change.
"I think this is the right time to sort out Europe's problems, sort out the eurozone problem, defend your national interest, and look to the opportunities there may be in the future to repatriate powers back to Britain - and obviously the idea ofsome limited treaty change in the future might give us that opportunity, " he told a news conference.