The biggest opportunity in 2013 is in Africa. It has seven out of the ten fastest-growing economies in the world. In Nigeria alone there are 100 million people with mobile phones. In total, 300 million Africans - five times the population of Britain - are in the middle class.

One thing that I feel very, very strongly is that we talk about Islamic countries, Islamic people, Islamic leaders, as either moderates or extremists. It's almost like there are only two categories of Muslims. And actually, that doesn't show respect. It shows lack of understanding of the diversity of Muslim thought.

The two biggest threats to international security in 2013 are Iran getting a nuclear weapon, and Iran being bombed to stop it getting a nuclear weapon. Both would precipitate a long and dangerous conflict in an already unstable Middle East. Both would be a disaster.

History is information. Memory is part of your identity.

With all the problems we are having, I won't be afraid to tell leadership, 'You need to explain to me why I should follow you anywhere.'

On the day I became Soviet leader, in March 1985, I had a special meeting with the leaders of the Warsaw Pact countries and told them: 'You are independent, and we are independent. You are responsible for your policies, we are responsible for ours. We will not intervene in your affairs, I promise you.'

The truth is the Republican leadership has created a credit card Congress that is recklessly selling out the future of America, our children and our grandchildren, and President Bush is the most fiscally irresponsible President in the history of America.

Nigel Farage, the leader of the U.K. Independence Party, is a true populist; Senator Bernie Sanders, the former U.S. presidential candidate who campaigned for Hillary Clinton after losing his battle for the Democratic Party's nomination, is not.