[hanoz]

You will if you take up citizenship in a country which doesn't allow dual nationality, or, more commonly, you will if you're an EU resident who doesn't have EU citizenship.

It's a bad enough rule to apply to individuals, but to apply it on mass to people, probably most of whom didn't actually want to leave, of course is petty and spiteful. You can be on either side of the Brexit debate and see that. Where's the good will?