Keir Starmer has tried everything to avoid being forced to choose between Europe and the US, and for a country that has burned too many international bridges lately that was the right instinct. He has swallowed any amount of personal mortification and public disquiet in the process, only to discover that whatever Britain gives, Trump always demands more. For this president, you are either all in or all out. Though Britain joined an American military operation to seize a Russian-flagged tanker suspected of sanctions busting only days ago, that didn’t protect us from presidential wrath when we also sent a single officer to Greenland last week, in symbolic solidarity with our (and at least in theory the US’s) Nato ally Denmark. You can’t ride two horses, it turns out, when one is a mad bucking bronco.