All that said, it's pretty clear what the best location for European forces to occupy militarily is, and that's the US scientific stations in Antarctica. They are literally on the other side of the planet from Greenland, meaning a split in attention and resources. They are lightly defended. There are unresolved claims for big swathes of Antarctica by European countries, so we get to start juggling those concepts again.
@evan
1. If things come to blows, then yes, it would be a good idea to seize some US territory. But pre-emptively doing so would be a strategic error; it is critical that the first blow be struck by the Americans, decreasing their support not just with other nations but domestically and within the US military. And after all, it's still likely that Pres. Trump will go no further than trade war.
2. "Preëmptive"? When did you start writing for the #NewYorker?