The decision to appoint Peter Mandelson as envoy to the Trump administration has backfired spectacularly and could bring down the prime minister.

PM faces calls to resign as government says he was ‘not aware’ Foreign Office overruled disgraced Labour peer’s vetting ‘until this week’

The decision to appoint Peter Mandelson as envoy to the Trump administration has backfired spectacularly and could bring down the prime minister.