US President Donald Trump has promised new arms sales in Europe, including advanced air defence systems to Nato allies and Ukraine, as the transatlantic alliance ramps up its military partnership, signalling a potential thaw after Trump repeatedly railed against the coalition.In a press conference on the last day of the Nato summit in Ankara, Turkey, on Wednesday, Trump said that as European nations rebuild their militaries, American equipment will be the “largest beneficiary”, claiming US$3...