Seoul Threatens Retaliation as Ukraine Refuses to Apologize for POW Disclosure

Key points

• President Lee Jae-myung stated that Seoul would take 'further measures' if Ukraine refuses to acknowledge the facts and apologize for the disclosure.
• Ukrainian Foreign Minister Andrii Sybiha described the incident as a 'diplomatic misunderstanding' and emphasized the importance of continued cooperation with Seoul.
• South Korea claims Ukraine requested confidentiality to protect the POWs' families and avoid criticism regarding missed prisoner exchanges with Russia.
• Ukraine’s presidential chief of staff Kyrylo Budanov suggested North Korea’s involvement in the war was preparation for combat on the Korean Peninsula.
• South Korea has provided $445 million in humanitarian aid to Ukraine since 2022 but has not supplied lethal weapons due to its policy on active conflicts.

Background

This dispute follows the transfer of two North Korean soldiers captured in January 2025 in Russia’s Kursk region. The soldiers had expressed a desire to defect to South Korea. Previous coverage noted that Zelenskyy’s announcement at the UN General Assembly in September 2026 triggered immediate diplomatic friction, with Seoul accusing Kyiv of violating a prior confidentiality agreement. The current escalation marks a shift from demands for an apology to threats of unspecified retaliatory actions.

How outlets are covering it

AP News and Euronews highlight the tension between Seoul’s demand for an apology and Kyiv’s characterization of the event as a misunderstanding. Euronews notes that analysts view the secrecy as potentially beneficial for Ukraine’s own prisoner exchanges with Russia. BBC reports that Zelenskyy’s office denied the existence of a confidentiality agreement, escalating the conflict. CNBC adds that South Korea’s National Intelligence Service suggested Zelenskyy may have disclosed the transfer to boost support for arms sales, a claim Seoul rejects. All sources agree that the incident has strained relations between two US-aligned nations.

Why it matters

The dispute risks damaging the security partnership between South Korea and Ukraine, particularly regarding potential arms transfers. It also highlights the complex interplay between North Korea, Russia, and Ukraine, where prisoner exchanges and military cooperation are used as diplomatic leverage. The safety of the defectors' families in North Korea remains a critical concern, as Pyongyang is known to retaliate against defectors.

What to watch

South Korea is likely to implement unspecified 'further measures' if Ukraine does not issue a public apology. Diplomatic channels remain open, with Sybiha expressing hope for a quick resolution. The situation may influence South Korea’s stance on providing military aid to Ukraine and its broader relations with North Korea and Russia.