I'm sick of Korea extorting money; I don't really advocate war; but perhaps that little fatty needs a lesson on how we can demolish him in a minute. No ground troops needed.<quoted text>
Your suggestion is basically to beat up on North Korea because they are weak. The only differences between North Korea and Iran are that Iran is a much bigger threat, but we are much less likely to confront Iran because Iran would not be a pushover.
Iran doesn't want to be obliterated either. It's all saber rattling.