Though the poorest Americans voted for Hillary Clinton, many relatively wealthy people voted for Trump and generally it's a mistake to think that economics explains Trump. The US is doing relatively well, the economy has significantly recovered since 2008, unemployment rates are low. I would say rather that his appeal to the working class was cultural: "I'll bring back the kinds of jobs your fathers had," and, by implication, the whiter, simpler post-war world when America had no real economic competition.

The Soviet Union was, by the 1970s and 1980s, relatively stable and predictable. Putin's Russia is much more volatile. Nuclear policy is really in the hands of one person, or a small group of people, instead of a huge party-state apparatus. The possibility of a mistake is greater now.

Putin saw the Ukrainian revolution as a challenge to him personally, and I think that's why he, in fact, over-reacted. I think his occupation of Crimea and then annexation for him was actually a mistake from Russia's point of view. And then his invasion of Eastern Ukraine was also a mistake. He imagined that he would invade Eastern Ukraine and then eventually split the country in half, and he discovered that in fact, Russian-speaking Ukrainians are not Russians, and they didn't support him.

The Russian economy is about the size of the Italian economy; it's very small, and Russia's military force is larger than it was, because Putin's been investing in it, but it still doesn't compare to that of the United States, and his reach and aim still don't compare.

Donald Trump may undermine some of the traditional checks on the presidency: the press in particular, but also the various government and Congressional ethics bodies, as well as the career civil service.

Globalization has genuinely drained power away from national politicians and people feel it. People in our fast digital age are also frustrated with the comparably slow democratic processes. Many young people - and some old people - want to know, Why does everything take so long? Why can't someone just decide and then move forward?

To describe Russian politics as "managed democracy" - and that's sometimes hard for outsiders to understand, because a lot of the forms of democracy exist in Russia, so there are elections; there is a press; there is a campaign, and so on. But the outcome of the campaign is never in doubt. So the campaign is manipulated. There is a real opposition in Russia. There are one or two real opposition figures who do want to change the political system, but they will probably not be allowed to run, and one way or another they will be prevented from being on the ballot.