Donald Trump's special envoy to Ukraine said the United States would 'kick Russia's a*s' on the battlefield in the event of all-out war. Keith Kellogg, the U.S Special Envoy for Ukraine and Russia, and a retired lieutenant general, suggested Vladimir Putin's rhetoric was overblown during a meeting in Kyiv. 'We had a discussion recently in the Oval [Office] where... they were talking about the primacy of the Russian military and how they were pretty good,' he told British historian Niall Ferguson. 'And I said to the people in the room: "We'd kick their a*s." 'I mean by that, don't take...