Why woulsn’t we already have a missile defense system in the Pacicific? Our enemies know for sure that we don’t have one there right now.
Here is an interesting article looking at both the NK and the Iranian nuclear issue and our response/knowledge. Lots of long informative comments below the article.
http://www.commentarymagazine.com/2013/03/15/u-s-intelligence-north-korea-and-iran/