Hey there, Einstein, once a country actually builds a nuke your options go way down. You can't send an army in to disarm N.K as you can with Iraq because N.K. would nuke Seoul as well as our troops. So, we're forced into diplomacy due to the utter failure of the Clinton administration to deal with N.K.
So saying we should deal with N.K. "first" is a cover for doing nothing about Iraq. But you knew that, didn't you?
Where did I say we needed to deal with N.K. first? Learn to read and think something through, genius.