How do we deal with not just the acts of violence, but the extremist ideology that lies behind them? Because though the numbers of fanatics that go and join and kill for a group like ISIS are measured in tens of thousands, those that support the wider ideology, I'm afraid, you measure in tens of millions or more.

Retreat might give us a moment of respite but years of repentance at our weakness would, I believe, follow.

The first big choice: a government with the strength to deliver stability, or a government that takes the country back to boom and bust.

Sometimes people say to me, 'Well, what was the difference between Kosovo, which was a successful intervention, and Iraq and Afghanistan that have been so difficult?' And the answer is perfectly simple. In Kosovo, you have, after the removal of the loss of its regime, you had a process of political and economic reconstruction that took its part without the intervention of terrorism. If you had the intervention of terrorism, by the way, it would have been extremely difficult there - but we didn't.

What we also know is we haven't found them [weapons of mass destruction] in Iraq - now let the survey group complete its work and give us the report... They will not report that there was no threat from Saddam, I don't believe.

They could have been removed. They could have been hidden. They could have been destroyed.

The best philanthropy is not just about giving money but giving leadership. The best philanthropists bring the gifts that made them successful-the drive, the determination, the refusal to accept that something can't be done if it needs to be into their philanthropy.