Global warming is too serious for the world any longer to ignore its danger or split into opposing factions on it.

If you don't see the Internet as an opportunity, it will become a threat. In two or three year's time, the Internet will become as commonplace in the office as the telephone.

The first rule in politics is that there are no rules, at least not in the sense of inevitable defeats or inevitable victories. If you have the right policy and the right strategy, you always have a chance of winning. Without them, you can lose no matter how certain the victory seems.

What the commission that myself and Leon Panetta is trying to do is analyze this in two respects. First of all, what's the right military response and security response?

We are all internationalists now, whether we like it or not...

But I am an optimist about Britain; and the difference between an optimist and a pessimist is not that the optimist believes the world is wonderful and the pessimist believes it's beset by challenges; the difference is the pessimist believes we will be defeated by them; the optimist thinks the challenges can be overcome.

We have taken a situation in the U.K. because of concerns, for example, over immigration and other things, so Britain now is on a path out of Europe.