South Korea has dismissed its chief trade negotiator Yeo Han-koo from his post, officials confirmed on Saturday, 15 August, as Seoul confronts escalating tariff pressure from Washington and a series of unresolved bilateral trade disputes. The move comes at one of the most fraught moments in US-South Korea trade relations in recent years.

The Dismissal

Yeo was formally notified of his removal by the Ministry of Personnel Management on Friday, according to an official at the Ministry of Trade, Industry and Energy. No reason was given for the decision. Yeo previously served as trade minister under the Moon Jae-in administration and was reappointed to the negotiator role following the launch of the Lee Jae Myung administration in May 2025.

Why the Timing Is Significant

Since returning to the post, Yeo had been a central figure in trade negotiations with Washington, covering US tariffs and South Korea's investment commitments under a bilateral tariff agreement. His dismissal arrives as Seoul faces US pressure to accelerate those investment pledges and amid a separate dispute over regulatory fines imposed on US-listed e-commerce giant Coupang following a personal data breach.

Notably, on Thursday, US President Donald Trump signed a proclamation imposing new tariffs on drones and their components, including a 15 percent levy on imports from South Korea — adding fresh urgency to bilateral negotiations already under strain.

Trump's Hormuz Strait Remarks

Separately, President Trump on Friday declared his intention to designate the Strait of Hormuz as a territory of the United States 'pretty soon,' citing the US Navy's ongoing blockade of the critical waterway. Trump made the remarks during a visit to a police academy in Garden City, New York, as disruptions to shipping through the strait — a key route for oil, natural gas, and other commodities — have persisted amid the conflict in the Middle East, keeping energy prices elevated.

'After we finish defeating Iran, which is being very badly defeated ... pretty soon, I will be declaring the Hormuz Strait a territory of the United States,' Trump said.

What Comes Next

The identity of Yeo's successor and the direction of Seoul's trade strategy under new leadership remain unclear. With the drone tariff now in effect and investment commitment talks unresolved, South Korea's trade posture toward Washington faces a critical inflection point. How quickly Seoul can install a credible replacement negotiator may determine the pace — and outcome — of ongoing talks.