Facts of life, US is pretty much always at war with someone, at least this time we're using technology to minimize the collateral damage. I'll take drone strikes any day of the week over ground invasion, where you're looking at massive civilian casualties, not to mention ripple effects that can cause instability and civil war.
Morally right it may not be, but we never really have been.

I disliked this movie because of the blatant disregard for the source material. Extremis written by Warren Ellis is a great Iron Man story that is compelling and thought provoking. I understand that compromises are a necessity for writing commercial material, but what Shane Black wrote is almost unrecognizable.