Donald Trump’s message – or rather, the message he transmitted from Vladimir Putin – to Volodymyr Zelensky in Washington on Monday was stark: accept the deal Russia is offering, because otherwise you’ll lose the war. But if Moscow appears strong now, Ukraine and its European allies believe, it’s partly because Trump’s choices have made it stronger – namely, his decisions to curtail US military aid, interrupt intelligence sharing and, above all, accept Putin’s insistence on a peace deal before a ceasefire. And in fact, Russia is far from battlefield supremacy. Just hours before the Oval Office discussions, the British Ministry...