South Korea rejects military deployment to Iran conflict amid US investment talks

Non-intervention stance in Middle East conflict

South Korean President Lee Jae Myung confirmed on Friday that Seoul will not send troops or military equipment to participate in the war between the United States and Iran. Speaking at a news conference in Seoul, Lee addressed two weeks of domestic speculation and pushback over potential military entanglement alongside Washington. Lee stated that South Korea has consistently maintained a policy of non-engagement in foreign warfare and affirmed that this principle will remain intact. US President Donald Trump has repeatedly criticized Seoul in recent weeks, demanding South Korean military assistance in the region while reminding officials that American forces remain stationed on the Korean peninsula.

There won't be deployment that would involve or enter war. I can tell you that very clearly. We won't deploy military assets in any form to that end.

Energy security and naval patrol mandate

Although refusing direct involvement in military hostilities, Lee confirmed that Seoul is assessing measures to safeguard its commercial vessels and crude oil transit routes. South Korea depends on the Middle East for approximately 70% of its crude oil supplies, with about 95% of those imports passing through the Strait of Hormuz, a maritime chokepoint through which one-fifth of global oil and liquefied natural gas exports normally flow. The government is reviewing whether to expand the operational area of the Cheonghae naval unit, which currently conducts anti-piracy operations off Somalia and the Gulf of Aden near Yemen. In early September, Seoul dispatched an assessment team to the United Arab Emirates to evaluate operational conditions, while Iranian Foreign Ministry spokesperson Ismail Bagaei warned that any South Korean participation in operations in the strait would trigger grave consequences.

Stalled trade agreements and manufacturing investments

Bilateral friction between the allies also centers on unresolved economic arrangements. In Washington on Friday, South Korean Foreign Minister Cho Hyun met US Secretary of State Marco Rubio to address implementation delays regarding Seoul's pledge to invest $350 billion in US manufacturing. Under the trade framework agreed last year, Washington lowered tariffs on South Korean goods to 15% in exchange for these manufacturing investments. Lee acknowledged that commercial viability remains the central sticking point in negotiations, explaining that Seoul has insisted on including language requiring investments to be commercially reasonable. Rubio urged the prompt execution of the investment commitments and called for a transparent business environment for American firms in South Korea, as both officials pledged continued cooperation in strategic industries such as semiconductors.

Alliance pressures and diplomatic agenda

The simultaneous disputes over maritime security and investment terms follow Washington's decision earlier this summer to scale back joint military exercises with South Korea. Trump publicly expressed dissatisfaction with Seoul's reluctance to provide support in the Middle East, contrasting it with US defensive guarantees against North Korea.

He said, 'No, thanks.' I see. Well, why are we involved in helping you?

These foreign policy strains coincide with domestic challenges for Lee, whose approval rating declined to 37% fifteen months into his five-year term. Seoul postponed a scheduled parliamentary briefing on the US investment pact, with lawmakers now set to receive the presentation next week. Lee is scheduled to travel to New York next week to attend the UN General Assembly, while also noting ongoing coordination regarding potential future negotiations between Trump and North Korean leader Kim Jong Un.