Trump scales back Korea drills despite North's Ukraine-honed combat skills

President Trump announced Sunday evening that he was ordering a substantial reduction in joint US-South Korean military exercises set to begin the following day, citing what he described as his excellent personal relationship with North Korean leader Kim Jong-un. The decision came as a surprise to military planners on both sides of the Pacific, who had spent weeks preparing for Ulchi Freedom Shield, one of the two largest annual drills conducted by Seoul and Washington. The exercise was scheduled to run through August 27 and would have involved roughly 18,000 South Korean troops alongside American forces and personnel from eleven of the eighteen member nations of the United Nations Command, the multinational organization responsible for enforcing the 1953 armistice that ended active combat in the Korean War.

Trump's objection centered on cost and messaging. He said the drills were expensive and sent "a signal that is totally inappropriate and hostile" to a country that, in his telling, had been "unthreatening and respectful" during his tenure. He acknowledged it was too late to cancel the exercises entirely, so he had instructed Defense Secretary Pete Hegseth to cut them back substantially. The president also used the moment to air a separate grievance, asserting that South Korea had declined to assist in what he called the "denuclearisation of the Islamic republic of Iran." On the same weekend, Trump posted an old photograph of himself with Kim Jong-un on Truth Social, repeating his assertion that the two leaders "get along great" and fueling speculation about a possible new summit.

The timing of Trump's move created a stark tension with the military reality that US and South Korean officials had been publicly warning about for days. Last week, military leaders from both nations had announced that this year's drills would be redesigned to account for North Korea's rapidly evolving combat capabilities—capabilities gained through direct battlefield experience in Ukraine. More than 14,000 North Korean troops have already deployed to fight alongside Russian forces in the Kursk region, with Ukrainian President Volodymyr Zelenskyy warning that Russia was preparing to receive 30,000 additional soldiers from Pyongyang. Those troops have been learning modern warfare tactics that did not exist in North Korea's previous military doctrine: drone operations, GPS disruption, and coordinated cyber attacks.

Colonel Ryan Donald, the public affairs director for US-led commands in South Korea, had explained at a joint briefing that the exercise scenario would specifically reflect these new threats. "They've taken those lessons they learned there and brought them back to North Korea, that changes the DPRK capability," he said, using the formal name for North Korea. Lieutenant General Scott Winter, deputy commander of the United Nations Command, added that the drills would be "bigger and better than ever" precisely because they needed to account for North Korea's "contemporary battlefield experience." The exercises had been continuously evolving over five years to stay ahead of emerging threats, he noted.

Experts offered conflicting assessments of whether Trump's reduction would achieve his stated diplomatic goal. Leif-Eric Easley, a professor of international studies at Ewha Womans University in Seoul, warned that downsizing the exercise would "slow the process of South Korea taking on greater responsibility for its own defence, and weaken deterrence against possible conflicts in Asia." He argued that the cost savings were marginal compared to the diplomatic risks. Lim Eul-chul, a North Korea expert at Kyungnam University, suggested that Pyongyang would likely view a partial reduction as insufficient. "The North will only view it as meaningful if the joint exercises are cancelled in their entirety rather than scaled back," he said. Cheong Seong-chang, vice president of the Seoul-based Sejong Institute, warned that Trump could go further in a future meeting with Kim, potentially suspending the exercises altogether or reducing US troop levels without consulting South Korea.

North Korea's response to the drills had been characteristically sharp. The regime test-fired ballistic missiles in the days before the exercise was set to begin, which analysts interpreted partly as protest. The foreign ministry called the exercise "a rehearsal for an aggressive war" and warned it would "respond to a new level of a threat with a new level of a deterrent." Such rhetoric is routine before major US-South Korean drills, though the underlying military reality has shifted. The two countries have also been deepening their military partnership since June 2024, completing what one open-source investigation concluded was functioning more as a military logistics corridor than a trade route—a road bridge over the Tumen river expected to open in September.

South Korea's defense ministry responded to Trump's announcement by stating that the joint drills would "proceed as previously notified and scheduled," a careful formulation that neither directly contradicted the US president nor fully committed to the original plan. The statement left open the question of what "substantially reduced" would mean in practice. Chun In-bum, a retired South Korean lieutenant general who commanded the country's special forces, underscored the stakes. "This is a very serious improvement in North Korean capabilities," he said. "And we should not take lightly this threat environment." The exercise would proceed, but under a cloud of uncertainty about American commitment to the alliance that has underpinned Korean peninsula security for seven decades.