I think Chinese leadership is trying to tell the world they have another set of logic or reasoning or values which are different from yours. Of course, I don't think they believe that. It's just an argument that's made when you can't confront the truth and facts. They really want to maintain power.

The 'Bird's Nest' National Stadium, which I helped to conceive, is designed to embody the Olympic spirit of 'fair competition.' It tells people that freedom is possible but needs fairness, courage and strength.

The Olympic Games are highly commercialised. They purport to follow the traditions of an ancient athletics competition, but today it is the commercial aspect that is most apparent. I have seen how, through sport, cities and corporations compete against each other for financial gain.

To survive, China had to open up to the West. It could not survive otherwise. This was after many millions have died of hunger in a country that was like North Korea is today. Once we became part of global competition, we had to agree to some rules. It's painful, but we had to. Otherwise there was no way to survive.

I have always been interested in gender politics, so I'm not that keen on doing things that don't represent a truth about women.

In 2001, President George W. Bush was condemned for politicizing science with his decision to limit federal funding for stem-cell research; in 2009 President Obama was praised for reversing it, even though his decision was arguably just as political.

We believe that government in Britain should improve the quality of people's lives and improve the quality of our public services in every local community.

It's fair to say that the policy and character of my government would be, or the government which I lead, would be very different to that of President Trump.