How's things on the bridge?

I'm sure that your bellicosity is matched by your ardor and at the time of that "low impact strike" (I'm still pondering the dichotomy in that phrase...) you'll present yourself for accession into the Armed forces in some capacity to go help save South Korea. However, your post raises a couple of questions.

Question 1. Our assistance to South Korea 1950-53 (plus the ongoing continuation), our assistance to South Viet Nam, our invasion of Afghanistan and Iraq were all low impact efforts. How did they work out for us?

Question 2. Assume we announce our non acceptance of a nuclear North Korea. In the event no one else joins us and supports that position, how do we enforce our 'non acceptance?'