Cutting Off the Source
Here's another reason to topple Saddam, and quickly: North Korea has an untested missile able to reach the western United States.
How about this. Since we can't get rid of the vile North Korean regime without losing most of Seoul to NK artillery, why don't we just dry up their primary sources of cash? I'm talking about their weapons customers, and the list reads like a Who's Who of Naughty Nations. Iraq, Iran, Pakistan, etc.
We don't need a bloody Second Korean War, a blockade, or even help from Beijing. All we need is to fully prosecute the war we're already stuck in.