For the rest, you're forgetting how humans work. Do you think the average MAGA voting is voting to destroy someone else? Or do you think they're voting to improve their lot? Voting for expansionism doesn't necessarily mean voting for world war. I'm British, it's very easy to compartmentalise invading a country, from developing a country, civilising, being a net good, etc, etc. What did the average USian think Afghanistan was going to be? Or Iraq? Do the USians who want Greenland imagine that's going to turn into WW3? Nuclear war?
The enemy are very rarely mustache twiddling baddies.