I think you make an excellent point. That argument does not work as to Iraq, but as to North Korea it seems to be a solid argument. The fly in the proverbial ointment here is that North Korea entered into an agreement with the US (and separately with the rest of the world) that they would not seek to acquire these weapons. They are breaking that agreement. Is attacking them the right thing to do? I am unsure about that. If not, then the question becomes...what DO you do? I am glad that making those decisions is not my job...I don't know what we should do about it. I just know that something has to be done.
A man is in a room with Osama bin Laden, Saddam Hussein and Bud Adams. He has a gun with 2 bullets. Naturally he shoots Bud Adams twice.