By chance, US interests coincides evil interest.
"Good" and "Evil" are moral concepts that do not apply to national interests of any nation.
1st question:"What national interest did US serve by attacking afghanistan(plz try to avoid the obl THINGY)iraq(plz avoid the wmd THINGY)libya(plz avoid the true democracy THINGY).2 question:"what national interest will US serve if (what US is dieing to do)US attacks iran (for the love of god do avoid the nuclear weapon THINGY).....THX
I would love to answer, but aren't these all off-topic questions?
anyhow i can ask u in some other relevant thread 
