Unlike most European countries, the police in the US are decentralized; even the FBI has regional offices. Amending the constitution is a long and tedious process.

I have been told by people close to Trump that "Brexit Britain" is the only foreign policy issue that interests him, because he thinks the UK referendum paved the way for him. He hopes to help Britain leave the EU, and possibly to damage the EU, by offering a trade deal.

I don't want to predict calamity. But I am afraid of a new Russian occupation of parts of Eastern Europe. Also of a new Russian campaign to exert influence in Germany or other parts Europe, aimed at making continental politics less democratic. I am afraid of a US trade war and even a shooting war with China.

The evolution of a bourgeoisie is a healthy phenomenon when it grows and prospers thanks to bourgeois values: hard work, honesty, personal responsibility.

Putin imagined it would be different. So, like many Russian leaders before him, he imagined that Ukraine was basically Russia, but they speak with a funny accent. Actually, it's not Russia; it has a different identity. It has a very different language. Russians don't automatically understand Ukrainian. And, in particular, the way Ukraine has developed over the last two decades is different from the way Russia has developed.

The old battle between Christian Democrats and Social Democrats is now meaningless, not least because the social structures that underlay those parties, the church and the unions, have faded away. Nationalists and populists understood this change earlier; now the rest of the political world needs to understand that the political lines have been redrawn and it's time to change.

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.