That depends. Has Russia started a land war across the entire Eastern front at the same time?
Then it might be a bit tough for Europe to do anything about Greenland. It’s almost like the whole ‘we need to take Canada’ rhetoric is pre-emptive, knowing Canada would be the most dangerous remaining opponent to such a plan, should Europe be busy… for some reason. Take Canada and Greenland at roughly the same time. Tie them down while Europe is busy. The US ends up owning Greenland. And, if things fall out wrong, Canada, too - though it might not be a primary goal.
From that point, Russia and the US divide Europe between them.
Is this an insane plan? Yep. Would it work? Doubtful. Is it the potential thinking of the fascist dickheads in charge, despite that? I suspect so.
I don’t know that there’s any irony there. In my reading, the passage is actually advocating against such laws. And is aimed at the kind of thinking that leads to such laws.
I don’t think he is condoning or advocating for such thinking in that passage - more saying that, if you do want these kind of laws (while he lists some contemporary examples) you have to realise that it won’t actually work and will have other, negative consequences. That’s not him necessarily condoning the thinking or actual moral standing of those examples. Just pointing out what he sees are the realities of such laws.