Lord Mandelson was branded a traitor on Saturday after he urged EU chiefs to screw Britain in Brexit talks.
The ex-Labor minister claimed it would be “absolutely impossible” to strike a deal because Theresa May has the “wrong attitude.”
And he declared: “One can only advise the Europeans one thing – forget Britain and take care of your own interests.”
Lord Mandelson showed where his true loyalties lie in an astonishing interview with the German newspaper Die Zeit.
The Brexit-bashing peer – a former EU trade commissioner – is in line for a £34,600-a-year [$42,000] pension from Brussels after swearing an oath of loyalty to European institutions.