I hated [Robert Mugabe]. He's one of the worst human beings I've ever met. He treated black and white with equal contempt. He was a horrible human being.

I rang my friend Jim Wolfensohn, who was then running a private commercial bank in New York. I said, "Come up to Vancouver", and he did. I put my proposition to him. He said, "I think it could work." I said, "Will you help us?" He said, "Yes." So, I set aside senior people in our treasury and they worked with Wolfensohn and the investment sanctions were applied. And that's what brought the regime down. The last South African Finance Minister, Barend du Plessis, went on record as saying that it was the investment sanctions that put the final nail in the coffin of apartheid.

The essence of power is the knowledge that what you do is going to have an effect not just an immediate but perhaps a lifelong effect on the happiness and wellbeing of millions of people and so I think the essence of power is to be conscious of what it can mean for others.

I said to my people, "We're knocking apartheid off but we've got to be prepared to assist them." And I sent senior people over there to assist the incoming South African regime to go about the economic plan.

I wrote a letter to our Australian newspaper about three weeks before the invasion and I said, "Osama bin Laden must be on his knees morning and night praying to Allah that the Americans will invade." And, of course, he was, because nothing more advanced his cause - the cause of terrorism - than the invasion of Iraq. It was an absurdity.

It [also] lives on its history, now, to some extent: its achievements [ of the Commonwealth] in Rhodesia and South Africa, which were enormous. And they'll live on that for some time, I guess. And there is still - I'm out of touch with it now, of course - but I still think there is a degree of cooperation at the economic level, to some extent, with the more developed countries helping the less developed. How substantial that is now, I simply am not versed.

[ Elizabeth II] has immersed herself, in the sense [that] she can speak intelligently about any and all members of the Commonwealth and she has played a role.