Until about 15 years ago, whenever NK wanted a bailout or food gift, a “discovery” of an American MIA would be offered up as a good faith move.
A high ranking NK defector testified the North had gathered and stored remains from the war and would announce a discovery whenever they wanted or needed something.
I guess they’ve exhausted their stash.
I’ve heard “rumor” that there were American MIA’s living in Russia back in the ‘90’s. Many were supposedly integrated and decided to stay since they were convinced their country had pretty much abandoned them.
But I haven’t been able to verify that.