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.

I'm going to be honest with you - I don't know a lot about Cuba's healthcare system. Is it a government-run system?

We have staring us in the face here an enormous opportunity to actually find a way forward to have peace and stability in Syria, to reconstitute it. It'll take years to do that. This will not be an easy fight even with concerted coordination with respect to ISIL. But it is far more doable with that kind of approach than otherwise.

What we do right now, today, matters.

I came into public life during the 1960s when a whole bunch of us believed in our ability to change the world. And we did a lot of things.

The threat of Saddam Hussein with weapons of mass destruction is real, but as I said, it is not new. It has been with us since the end of that war, and particularly in the last 4 years we know after Operation Desert Fox failed to force him to reaccept them, that he has continued to build those weapons. He has had a free hand for 4 years to reconstitute these weapons, allowing the world, during the interval, to lose the focus we had on weapons of mass destruction and the issue of proliferation.

If we don't go far enough fast enough, the damage we inflict could take centuries to undo - if it can be undone at all.