Donald Trump assailed Britain’s ambassador to the United States as a “pompous fool” and slammed outgoing premier Theresa May’s “foolish” policies Tuesday in a second straight day of virulent attacks triggered by the leak of unflattering diplomatic cables. The missives threaten to plunge Washington and London into a rare diplomatic crisis and have landed their author, British envoy Kim Darroch — and by default his prime minister — in the US president’s crosshairs. Britain’s Foreign Secretary Jeremy Hunt, who is running to replace May, responded that Trump’s comments were “disrespectful and wrong” — in a marked departure from the more conciliatory tone struck by his leadership rival Boris Johnson, who declined to criticize the president’s comments.