[B-Man]

I think North Korea is next. If we go after Iran next, too many lefties will see that as proof that we are specifically targetting Arabs/Muslims. In addition, North Korea is far more of a threat than Iran (or any other rogue state I can think of).

I think Afghanistan/The Taliban was target practice, Iraq is a step up in terms of practice for our military/testing of new weapons, and North Korea will be the toughest test of the three for our military (assuming they don't come to their senses and go back to the arrangement where they took our money & aid in exchange for not working on nukes).

If Iran is pursuing nuclear weapons, then I think we need to do whatever needs to be done to persuade them to stop working on them. The same applies to North Korea. No additional countries should be allowed to acquire nuclear weapons, the world is already dangerous enough. If they wont take money or aid in exchange for dropping their nuke program, then I think a limited preemptive military strike against their nuclear reactors would be a good thing (similar to what Israel did to Iraq circa 1980).