Page 6 USA North Korea
I can hardly even speculate what will happen with N. Korea. Saddam was/is a monster, but nothing at all like the North Koreans. Take a look at this article from the Wall Street Journal
Perhaps some of what you see as contradiction in this case comes from the following:
1. Iraq, in the 1980's and early 1990's publicly said that they had WMDs.
2. The UN passed 17 resolutions demanding that Iraq account for those weapons
3. Iraq consistently said that they had destroyed them, but refused to provide any evidence
4. Iraq used some of those weapons on their own people and on Iranians
5. North Korea has now publicly proclaimed that they have nuclear weapons
6. So far, the UN hasn't done or said much of anything about it
7. The US, which is tied up with active terrorists and terrorist supporting states, hasn't yet addressed North Korea
8. If the US does address North Korea, aren't you all going to start criticizing us again for acting unilaterally?
Who will North Korea use their nuclear weapons on if we do go in there? Most likely South Korea or Japan.
What regional change would we expect to see if we did go into North Korea? Would it make any difference to China? Probably not.
So, perhaps the comparison between US actions towards Iraq and North Korea aren't as cut and dried as they appear. I am sure that one of the policy objectives involved with our entry into Iraq is to impress the other regional governments to seriously rethink their support for terrorism. Entry into North Korea would not likely do anything like that.