South Korean President Lee Jae Myung told his cabinet Tuesday that Seoul is powerless to stop the United States from redeploying military assets out of the country, after reports confirmed that Washington had begun moving Patriot missile batteries and parts of a Terminal High Altitude Area Defense system from the Korean Peninsula to support operations against Iran.

"It appears that there is controversy recently over U.S. Forces in Korea shipping some weapons, such as artillery batteries and air-defense weapons, out of the country," Lee said during the livestreamed cabinet meeting. "We are voicing our opposition to the USFK shipping some of its air defense weapons according to their military needs as the situation unfolds, but it is also a clear reality that we cannot fully carry through our opinion."

The remarks were notable for their candor. South Korea rarely speaks this openly about disagreements with its most important security partner, and Lee's comments amounted to a public acknowledgment that Washington's escalating campaign in the Middle East is reshaping — at least temporarily — the military balance on a peninsula where North Korea maintains an active nuclear weapons program.

What Has Been Moved

South Korean media reported last week that U.S. Forces Korea had consolidated Patriot missile launchers from sites across the country to Osan Air Base in Pyeongtaek, fueling speculation that a transfer to the Middle East was imminent or already underway. Flight-tracking data from Flightradar24 confirmed that U.S. military transport aircraft, including the C-17 Globemaster and the less commonly seen C-5 Galaxy, had flown out of Osan in recent days. South Korean media noted it is rare for the C-5 to land on the peninsula at all, given its size.

The Washington Post, citing two U.S. Defense Department officials, reported that the Pentagon had moved parts of its THAAD system from South Korea to the Middle East. The military also drawing from Patriot interceptor stocks in the Indo-Pacific to bolster air defenses against Iran's sustained drone and ballistic missile campaign across the Gulf region.

Reuters photographs taken Tuesday at Osan showed multiple mobile launchers on the tarmac that defense experts identified as Patriot PAC-2 and PAC-3 interceptors.

U.S. Forces Korea declined to comment on the movement of assets, citing operational security. South Korea's Defense Ministry similarly declined, saying it was "not appropriate" for Seoul to comment on USFK force employment decisions.

Lee's Defense of the Move's Impact

Despite his objections, Lee was careful to argue that the redeployment does not leave South Korea exposed. He pointed to the country's defense budget — which he said ranks among the world's five largest and is equivalent to roughly 1.4 times North Korea's entire gross domestic product — as evidence that Seoul's deterrence capability remains intact regardless of what the USFK moves.

"If you ask whether our deterrence strategy against North Korea has been severely affected, I can say absolutely not," Lee said. "Considering the scale of our defense budget, the development of our defense industry, and our international military capabilities, there is absolutely no reason to be concerned about our ability to defend the nation."

South Korea has invested heavily in indigenous missile defense, including the Cheongung surface-to-air missile system developed by LIG Nex1 and Hanwha Aerospace. That system reportedly saw its first combat operations when the United Arab Emirates deployed it against Iranian projectiles during the early days of the Iran conflict.

Still, defense analysts cautioned against reading Lee's reassurances as a full picture. "Although South Korea has developed and deployed its own sophisticated missile defense systems, such as Cheongung, the Patriot system remains a major component of its air defense architecture," said Lami Kim, Korea Chair in Advanced Technologies, National Security and Defense at the International Institute for Strategic Studies.

North Korea's Position

The redeployment comes as North Korea warned Monday of "terrible consequences" over the annual joint U.S.-South Korea military exercises that began the same day. Kim Yo Jong, the sister of North Korean leader Kim Jong Un, issued the statement through state media, saying Pyongyang would "firmly defend the peace of the country."

This year's exercises feature fewer field training maneuvers than last year's, a concession Seoul sought as part of its broader effort to maintain reduced tensions with Pyongyang. North Korea, for its part, has issued public statements in support of Iran's new supreme leader, Mojtaba Khamenei, following the killing of his father in the opening U.S.-Israeli strikes on February 28.

Choi Gi-il, a military studies professor at Sangji University, warned that North Korea could read the redeployment as an opening. "There is a risk that North Korea could miscalculate the relocation of some of these weapons as a pretext for low-level provocations to test the allies' defense posture," he said.

Broader Regional Anxiety

South Korea is not the only U.S. partner in Asia watching the asset transfers with concern. Taiwan's Defense Minister Wellington Koo said Tuesday that Washington had not contacted Taipei about any transfers of U.S.-supplied weapons systems to the Middle East. Taiwan holds Patriot missiles in its arsenal and depends heavily on American arms for its defense posture against China.

Japan also faces related pressures. Two U.S. guided-missile destroyers homeported in Yokosuka are currently deployed in the Arabian Sea in support of operations against Iran, according to the U.S. Naval Institute. The sole U.S. carrier assigned to the Pacific is undergoing maintenance at Yokosuka, leaving a temporary gap in American naval presence in the western Pacific.

The head of Japan's main opposition party raised the issue directly in parliament Monday, arguing that U.S. forces stationed in Japan were deployed there for Japan's security and for stability in East Asia — not to fire missiles at targets in the Middle East.

South Korea meanwhile placed its overseas peacekeeping troops on heightened alert. South Korean forces deployed near Lebanon and near Al Dhafra Air Base in the United Arab Emirates detected strikes in their vicinity during the first days of the war. The unit in the UAE suspended training and has remained on compound standby since March 1. Defense Minister Ahn Gyu-baek has ordered commanders to prioritize troop safety and prepare evacuation plans for South Korean nationals in the region if conditions deteriorate further.