Odd definition of a threat you have there. He's merely saying what the rest of the world already knows. Britain has no power outside the EU and if it leaves nobody has any reason to arrange favorable trade with Britain. Seriously, I think a large number of people here are in the grip of a collective hallucination. It's a really odd thing to watch a nation attempt to commit economic suicide. Still, I think there are still enough sane people here to prevent that.