British government warned ‘new Korean War is now a real possibility’ because Donald Trump is so 'volatile and impulsive'

“If war did begin, the President would be on the phone to 10 Downing Street within an hour asking for support," he added. “The British prime minister would then have only a few hours, at most, to make clear how she stood on what would be one of the most momentous strategic shocks of the post-Cold War era.”