You wouldn't know it given the land size of the country, but NK used to have the third largest standing army in the world, after the USA & PRC. (They are fourth now, after India)
Which would stand up just about as well as the Iraqi army did in either Gulf War after a week's worth of airstrikes from a CAG in the Sea of Japan, cruise missiles and land-based bombers out of Japan. It'd be a turkey-shoot.