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GeopoliticsMediumUpdated×2•Originally published 7 September 2026•Updated 8 September 2026•
2 min read

Iranian Foreign Ministry Warns South Korea Against Hormuz Military Role as Seoul Considers Options

Key Facts

1Iran's foreign ministry warned of serious consequences from any South Korean military involvement in the Gulf and Strait of Hormuz.
2Seoul has made no final decision and is considering military and nonmilitary options.
3The Strait of Hormuz carried 61% of South Korea's crude-oil imports and 54% of its naphtha imports in the previous year.
4An overseas deployment of South Korean troops requires National Assembly approval.

Iran's foreign ministry warned South Korea on September 7 that any military presence or participation in operations in the Gulf and the Strait of Hormuz would be viewed as direct support for the United States and could carry serious consequences. The warning came as Seoul considered a possible contribution to efforts to secure freedom of navigation.

The official position followed a more detailed warning from academic Mohammad Marandi, a University of Tehran professor and former media adviser to Iran's nuclear negotiating team. Marandi said Iran could treat South Korea as an enemy and target Korean economic and military assets in Saudi Arabia, Bahrain, Kuwait, the UAE and Qatar; those details should be attributed to him rather than presented as an announced government military plan.

South Korea's presidential office said no final decision had been made and that the government was considering military and nonmilitary options while accounting for defense readiness on the Korean Peninsula. The foreign ministry added that Seoul was consulting relevant countries and the international community on vessel passage while keeping diplomatic channels with Tehran open.

Reported options include a maritime patrol aircraft, a logistics support vessel and a mine-detection and clearance unit, alongside noncombat search-and-rescue contributions. Any decision to deploy troops overseas would require National Assembly approval under South Korean law.

The decision is sensitive because South Korea relied on the strait for 61% of its crude-oil imports and 54% of its naphtha imports in the previous year. That concentration makes a prolonged disruption a potential risk to energy and petrochemical feedstock costs, but it does not by itself determine whether or how Seoul should contribute militarily.

The presidential office said on June 17 that the Hormuz crisis had exposed vulnerabilities in East Asia's energy supply chains. Seoul's next step is a formal decision; any troop deployment would then move to the National Assembly, while the mission's scope and nature would determine the scale of the economic and security risks.