Seoul threatens 'further measures' as Ukraine refuses to apologize for POW disclosure

Key points

• President Lee Jae-myung accused Ukraine of undermining his authority and making him appear a 'liar' by publicly revealing the secret transfer of two North Korean soldiers.
• Seoul has summoned Ukraine’s chargé d’affaires and demanded a formal apology, warning that failure to comply will result in unspecified 'additional measures.'
• Ukrainian Foreign Minister Andrii Sybiha described the row as a 'diplomatic misunderstanding' and emphasized the importance of continued cooperation with Seoul.
• South Korean intelligence suggests Zelenskyy may have disclosed the transfer to pressure Seoul into providing lethal weapons, a request Kyiv made in August but Seoul has refused.
• The dispute risks complicating US efforts to maintain a united front against Russia and China, as it pits two major US-aligned allies against each other.

Background

This crisis follows the capture of the two North Korean soldiers in January 2025 in Russia’s Kursk region, where they were fighting alongside Russian forces. Previous coverage noted that the soldiers had expressed a desire to defect to South Korea. The current escalation is part of a broader pattern of friction between Seoul and Kyiv regarding arms support; while Seoul has emerged as a major arms exporter, it has maintained a policy of not supplying lethal weapons to active conflict zones, a stance that has frustrated Ukrainian leadership.

How outlets are covering it

Outlets highlight differing emphases on the dispute's implications. Al Jazeera and CNBC focus on the diplomatic breakdown, noting that the row complicates US efforts to contain Russia and China. Euronews adds a domestic political dimension, citing analysts who argue that Seoul’s aggressive stance toward Ukraine contrasts with its cautious handling of recent North Korean border incidents, potentially causing public dissatisfaction. BBC notes that South Korean opposition has criticized President Lee for covering up the transfer to appease Pyongyang, while Euronews suggests the secrecy was partly to protect the POWs' families from North Korean retaliation. All sources agree that Kyiv denies the existence of a confidentiality agreement, while Seoul maintains that Kyiv explicitly requested secrecy to avoid criticism regarding missed prisoner exchanges with Russia.

Why it matters

The dispute threatens to fracture the alliance between two key US partners in Asia and Europe. It highlights the tension between Ukraine’s need for international support and South Korea’s domestic political constraints regarding North Korea. If unresolved, it could hinder Seoul’s potential future arms support for Kyiv and destabilize the security architecture in the Indo-Pacific and Eastern Europe.

What to watch

Seoul is awaiting a public apology from Kyiv. If Ukraine refuses, President Lee has indicated that 'further measures' will be taken, though the specific nature of these actions remains unspecified. Diplomatic channels are expected to remain tense as both sides navigate the fallout from the UN General Assembly disclosures.