Washington is “done with the funding” of Ukraine’s war against Russia, JD Vance, the US vice-president, has said, as Europe scrambles to build a united defence before in-person negotiations between Presidents Trump and Putin.Speaking in an interview after an emergency summit with European and Ukrainian officials, co-hosted by David Lammy at Chevening, the foreign secretary’s mansion in Kent, Vance said Americans were fed up with paying towards the cost of the war.“What we said to the Europeans is simply, first of all, this is in your neck of the woods. This is in your back door,” he told Fox News....