If by "our own interests", you mean the interests of the America and the American people, we haven't been looking out for those interests in a very long time -- and that's the point.
Quite sipping on the necon "Save the world" koolaid, and you'd see that.
At least I am not drinking the Code Pink kool-aid that you are. It is giving you hallucinations about neo-con empires and that in no way serves the interests of true Americans or freedom loving people anywhere.