In this dangerous age, Britain needs to exert soft power as well as the hard stuff

Shortly before he flew to Washington, Sir Keir Starmer turned up in the Commons, put on his sombre voice and declared: "Everything has changed." One of the more startling transformations has been to Sir Keir himself. The Labour leader came to office thinking, as did most of those who voted for him, that he was going to be a domestically orientated prime minister with primary ambitions to improve living standards, build lots of homes and rejuvenate public services. That's what "change", his one-word election slogan, was supposed to be about. When he originally selected his overriding "five missions", the defence…