Defending one's self (or one's country) is "conventional thinking"? Go back and read what I wrote again.
My main gripe with the way our country handles foreign affairs is that we tend to get embroiled in too many localized conflicts - which leads to destabilization down the road. And further involves us.
My other point is: Damn the politicians before the soldiers. Leadership makes the current model attractive and continues its propagation.
The phrase "Lions led by jackasses" seems appropriate here.