And of course all this has an effect on those actors outside the west, as they respond to these shifts. With a swooning admirer in the White House, Vladimir Putin now feels free to flex his muscles: witness this week’s offensive in eastern Ukraine. China is girding itself for a trade war, or worse, with Trump’s America. Meanwhile global jihadism rubs its hands as Trump, with his refugee ban, all but vindicates their warped vision – signalling to the world’s Muslims that, yes, Islamic State is right and there is no place for you in the west.