SOUTH KOREA PERSPECTIVE

Seoul, June 15, 2026. When Donald Trump announced on Truth Social that the agreement with Tehran was "now complete," South Korea processed the news primarily through an economic and maritime lens. The country imports nearly all of its petroleum, with approximately 70 percent originating from the Middle East and transiting predominantly through the Strait of Hormuz. Since the strait's effective closure following US-Israeli strikes on Iran in late February, Seoul had been forced to pursue alternative solutions—rerouting shipments, drawing on strategic reserves, and conducting quiet negotiations with Tehran—to maintain supply chain continuity.

The signing of the memorandum of understanding, scheduled for Friday in Geneva, opens the prospect of clearing the way for 24 South Korean-owned or South Korean-connected vessels currently immobilized in ports across Qatar and the United Arab Emirates. Among them is the HMM-operated cargo ship Namu, which was towed to Dubai following an attack on May 4. In total, 137 South Korean sailors remain in the region, including 103 aboard vessels flying the South Korean flag. The Korea Times reports that the petrochemical sector bore the brunt of the disruption, with some naphtha crackers operating at 50 percent capacity and issuing force majeure notices to international clients.

Markets reacted favorably: Brent crude fell to approximately 87 dollars per barrel and West Texas Intermediate to 84 dollars, down from levels approaching 100 dollars at the conflict's peak, according to Yonhap. Yet experts and industry officials temper the optimism. "The Middle East easing will have a positive short-term impact, particularly on raw material supplies," acknowledged an industry official quoted by the Korea Times, before cautioning that normalized Iranian production could reignite Chinese overcapacity and keep margins compressed.

Diplomatically and militarily, Seoul adopts a measured yet proactive posture. The Defense Ministry announced it is studying "concrete" measures to contribute to strait stabilization, contingent on the local threat environment and available operational capabilities. Spokesperson Chung Binna indicated that the proposed plan encompasses four phases, ranging from information sharing to potential military asset deployment, which would require parliamentary approval. The question of whether to redeploy the Cheonghae anti-piracy unit—currently operating in the Gulf of Aden—to Hormuz remains undecided.

KBS World notes that US Vice President JD Vance called the accord "a great moment for the United States" capable of "fundamentally transforming the Middle East for the next 50 years." However, the Korea Herald, citing Reuters analysis, dampens this narrative: the accord appears to fall short of several objectives Washington declared at the conflict's outset, particularly regarding Iran's nuclear program, whose negotiations have been postponed for sixty days. This gap fuels Republican hawk criticism and leaves a strategic uncertainty that Seoul—a US ally acutely attuned to American power's reliability—cannot overlook.