In short:
The revelation of a transfer to South Korea of two North Koreans caught fighting for Russia has sparked calls for a full apology.
Seoul has accused Ukraine of making the announcement in breach of a non-disclosure agreement regarding prisoner of war transfers.
Kyiv says it has only stated the fact of their transfer.


I mean, at least that one was explicable - an attempt to pacify the domestic far-right in Ukraine. Dumb and reprehensible, but explicable. Pissing off the South Koreans seems like just shooting yourself in the foot for no reason at all.