Even from an imperialist point of view makes no sense to me. It would be a huge distraction from actual threats to US imperialism, Russia and China. Sitting presidents are more likely to stay in office during wars though.
My hope is that ordinary citizens across the globe will become more connected via the internet, and as a result, will develop a strong distaste for war in general.
That was the idea 20 years ago. Now search engines, social networks, and national firewalls are more effective propaganda machines than television ever was because they're individually targeted. It's going to take a new generation of people who are not just ready to swallow anything they read in their newsfeed.
HN isn't very representative of the general population, but this is a good start. I'm thinking along the lines of someone in Wisconsin chatting about fishing with someone from Indonesia via an online forum, for example. That kind of thing could really help dissolve blind nationalism.