The US government plans to postpone the delivery of some military equipment to other countries in order to prioritize strengthening Ukraine’s air defences. White House national security spokesman John Kirby said on Thursday that in view of Kiev’s urgent needs, the US government had made the “difficult but necessary” decision to postpone certain planned arms sales to other countries, in particular missiles for the Patriot and NASAMS air defence systems. These should go instead to Ukraine, whose armed forces urgently need additional air defence capacities, he said. The countries concerned had be…