After the Iraqi War?

What is suppose to happen after the Iraqi war? Will North Korea, Iran, or some other country be next?

My opinion is the US is going to finish up the Iraqi war and head back home. After careful decisions, they will persue whoever is more of a threat (you know us Americans, we love the war games). Considering the two countries North Korea and Iran are both almost the same threat in different ways, they will head for who has the most Weapons of Mass Destruction considering we like playing 'nuclear footbal'.