South Korea has demanded an apology from Ukraine after accusing Kyiv of breaching a confidentiality deal over the transfer of two North Korean POWs to Seoul. The row erupted after Volodymyr Zelenskyy disclosed the transfer at the UN, straining bilateral trust. Relations between Ukraine and South Korea are showing signs of strain after Seoul on Sunday accused Kyiv of breaching a confidentiality agreement over the transfer of two North Korean prisoners of.