we should not interfere with our army uless the country is a threat to us or our allies. Hundreds of billions of $ a year could be spent on better things than bombing people.

American union of north and south america. Southeast Asia will probably merge, either politically or through war. But then the end of oil will collapse the U.S., and Asia is pretty much dependent on that trade. So the EU will be the most powerfull, but I don't think they will use their military.