Honestly, it’s too bad “create some tiny white ethnostate and have all the white nationalists go there” isn’t an option.  There are enough chunks of land available to make it happen.

Over the short term it would be opposed for all the usual reasons, but of course over the long term there would be a demand to dismantle it as a moral imperative, on the grounds that white nationalists do not deserve to exist (even though the same people would continue to allow other forms of ethnic/racial nationalism).

And of course Whitopia would probably suck, because WNs are not usually the best stock of white people.  But who cares?  It’s an opt-in community, no one has to live there.

I don’t expect much if any external terrorism to occur following its formation, and if small, it couldn’t successfully invade anywhere anyway.

Also it might fall over arguments about who really counts as white, but eh, once they all move there it’s not my problem.