@Foofie,
I think the world is a lot less safe for our invasion of Nam and Iraq. Also, it is less safe because of our occupation of Afghan. We are less safe having so many troops stationed abroad, which puts us on the front line in the case of a conflict. Diverting so much of our treasury for military, for which there is no economic payoff, deprives very important domestic demands from needed funding. There is going to be a steep price to us for allowing our infrastructire to decay, having a health care system that is the worst in the developed world, etc.