We do have to take the long-term view. And long term, the question to ask ourselves is whether America should attack others pre-emptively, whether she should embroil herself in wars far away from our soil, and try to bring democracy by force to the rest of the world.

Think about this: terrorism, epidemics, poverty, the proliferation of weapons of mass destruction-all challenges that know no borders-the reality is that climate change ranks right up there with every single one of them.

I think it was the right decision to disarm Saddam Hussein. And when the president made the decision, I supported him, and I support the fact that we did disarm him.

George Bush sold us on going to war with Iraq based on the threat of weapons of mass destruction. But we still haven't found them.

Ask Osama bin Laden is he is better off now than he was four years ago.

Politics has always been the art of the possible. Today it's too often the art of the probable - tinkering around the edges without any greater vision, without a sense of optimism and imagination.

Bush-McCain stategy in Iraq is policy to stay, not to win.