Seoul and Kyiv clash over public disclosure of North Korean POW transfer

Key points

• South Korean President Lee Jae-myung’s office accused Ukraine of breaching a nondisclosure agreement by revealing the transfer of two North Korean soldiers during a UN General Assembly address on September 23.
• Seoul argues that public disclosure jeopardizes the safety of the defectors and disrupts diplomatic relations, while Kyiv maintains that keeping the transfer entirely secret would have been 'strange' and that it only disclosed the existence of the transfer without operational details.
• The two soldiers were captured by Ukrainian forces in Russia’s Kursk region in January 2025 and had expressed a desire to defect to South Korea rather than return to North Korea.
• South Korean officials are considering additional measures in response to the breach, citing damage to trust between the two governments.
• The incident highlights tensions between humanitarian transparency and strategic secrecy, particularly given North Korea’s estimated deployment of 14,000 to 15,000 troops to support Russia’s war effort since 2024.

Background

This dispute follows earlier agreements between South Korea and Ukraine in March and July 2026 to cooperate on the status of North Korean POWs in accordance with international law. South Korea has recently sought to revive dialogue with North Korea to formally end the Korean War, making the handling of defectors a highly sensitive diplomatic issue. Additionally, North Korea has been integrating combat lessons from its troops in Kursk into its own irregular warfare doctrine for the Korean Peninsula.

How outlets are covering it

Al Jazeera and The Kyiv Independent both report on the diplomatic fallout but emphasize different aspects. Al Jazeera focuses on the South Korean presidential office’s demand for an apology and the broader context of North Korean troop deployments, noting that over 6,000 North Korean soldiers have been killed in the fighting. The Kyiv Independent highlights the specific quotes from President Lee Jae-myung regarding the breach of the nondisclosure agreement and the Ukrainian presidential office’s defense that the disclosure was necessary transparency. Both outlets agree that the transfer was confirmed by Zelensky at the UN, but they differ in their framing of the severity of the diplomatic damage, with Seoul viewing it as a serious breach of trust and Kyiv viewing it as a reasonable public disclosure.

Why it matters

The dispute underscores the complex diplomatic balancing act between South Korea, Ukraine, and North Korea. It reveals the risks of publicizing humanitarian actions involving defectors from a hostile regime, potentially endangering the individuals involved and complicating ongoing diplomatic efforts to engage with Pyongyang. The incident also highlights the broader implications of North Korea’s military involvement in the Russia-Ukraine war and the strategic considerations surrounding the treatment of its soldiers.

What to watch

South Korean officials are considering additional measures in response to the breach, though no specific actions have been announced. The diplomatic relationship between Seoul and Kyiv may face further strain as both sides navigate the sensitive issue of North Korean POWs. Future interactions between the two countries will likely involve renewed discussions on confidentiality and cooperation regarding the status of North Korean soldiers in Ukraine.