If you had said to anyone in 1945, at the end of the Second World War with the continent it ruins, that you could have a European Union of 28 member states stretching from Portugal in the West to Estonia in the East, all of them more-or-less liberal democracies - they wouldn't have believed you.
Developments in information technology and globalised media mean that the most powerful military in the history of the world can lose a war, not on the battlefield of dust and blood, but on the battlefield of world opinion.
Starting from the ruins of the Second World War, we - all Europeans said, after centuries of fighting each other, we're going to build permanent arrangements in which peace between European countries is secured, freedom is secured, and growing prosperity. And that's what we have done over the last 70 years.
I find Chinese debates about their political system domestically, but also about China's claims in the international system, to be among the most original and surprising and exciting of our time. The starting point is a system that none of us had anticipated, which I call Leninist capitalism, but also obviously because it is the most important emerging power. The question of China's relations with the United States in particular, and the rest of the world in general, is the question of war and peace in the 21st century.
