First of all let me say that I served 7 years in the US Army, and am VERY pro military.
With that being said, I wish we would concentrate more on our own borders, then on the affairs of other countries (I'm not trying to sound offensive). I think we stick our noses in other peoples business far too often. We're not big brother, and we need to stop acting like we were appointed that way. We also have a bad habit of spreading our military thin because of that.
They obviously have strategic (usually striking or defenseive) reasons for everything they do. 9 out of 10 times we will not know the "real" reason they're doing what they're doing. They'll tell us either what we want to hear or what they want us to believe about it.