For me, 9/11 was a game changer. It altered my perception of the security threat we faced. I took the position that Britain should be shoulder to shoulder with the U.S. It was a big decision; I didn't take it lightly, or in ignorance of its consequences. It's a big commitment for a country to give, but I believed it was the right thing to do.

You choose your own reality and you - social media then amplifies those conspiracy theories. So that's why I say social media is itself a revolutionary phenomenon.

The problem with the old ideology was that it suppressed the individual by starting with society. But it is from a sense of individual duty that we connect the greater good and the interests of the community

There are solutions that are proper, but they require the painstaking and difficult work of building alliances and also being prepared to analyze the problem realistically. And exactly the same thing is going on my side of the Atlantic as is going on your side of the Atlantic.

Where radical Islamism is going to be a factor, it's going to be very, very tough.

If we take all this actions and if it turns out not be true, we have reduced pollution and have better ways to live, the downside is very small. The other way around, and we don’t act, and it turns out to be true, then we have betrayed future generations and we don’t have the right to do that.

A simple way to take measure of a country is to look at how many want in.. And how many want out.