As far as I'm concerned, the Angels are virtually always with those who are defending their own homes and families and their own nation against an invader. Regardless of politics. That's the way I see it. I can think of maybe one or two exceptions to that in all history, but only one or two.

Yes, all imperialism is wrong, and it's always driven by greed for money or other forms of material gain if you dig a wee bit under the surface.