Biden’s sanctions send a warning to Putin

It’s not easy to frame sanctions, these days. They occupy that huge, hazy diplomatic no man’s land between sternly-worded but essentially vacuous expressions of concern – grave concern, if you really want to pretend you’re serious – and sending a gunboat. When it comes to trying to make an impression on Vladimir Putin, who has no qualms about causing the West concerns – and has a good few gunboats of his own – this is a doubly-difficult challenge.