Let's see...All my family and friends (myself included) live outside my country of citizenship(Our? Most of my friends aren't Swedish. But my family is). In fact, I've spent more of my lifetime outside my country of citizenship than in.
(Sorry OP, that dramatic intro simply doesn't apply to ppl like us. Unless there is war in the country we're in. But then we'll just move again)
I think we would just stay where we are, avoid whatever country Sweden is supposed to be fighting (Give me back that oil Norway!!![Anthropomorphic Sweden]), and wait out the war before visiting again.
Finally, I can't join any army, even if I wanted to, due to my handicap (Congenital heart problem).