Seems like eliminating ISIS would be an ideal use of A-10s. Not North Korea. But what do I know.
Why not both? Sounds like a good use. . .
ISIS or ISIL or whatever they are calling themselves today do not have over 6000 tanks. N Korea may have antiquated armor but they can still inflict a lot of damage.
We can take out ISIS/L if we had the green light to do it.