Hmmm...How many North Koreans routinely blow them selves up as suicide bombers in South Korea? Zero. How many times has North Korea said that South Korea should be wiped off the face of the earth? Zero. You are comparing apples and oranges. The main difference between NK and Iran is that 1 million NK troops don't want to die, I don't know if the same can be said for the Iranian (Martyrdom and all).
Iranian Qods Force commando's are the special groups you hear about causing trouble in Iraq and yes killing American troops with EFP IEDs.
Isreal will attack Iran and we may be dragged into the fighting to keep the Straight of Hormuz open or retaliate if our forces in Afghanistan or Iraq are attacked. My prediction anyway.
The 320,000 graves will be for Iranian troops not ours.