U.S. Intelligence Curbs Strain Seoul’s Sovereignty

On Monday, South Korea’s top envoy to Washington, Kang Kyung-wha, told lawmakers that communication with the White House had limits as intelligence disputes strained Seoul’s ability to respond to North Korea. “There are limitations in our communication with the White House,” she said. “I find it somewhat frustrating.” The friction centers on access to covert information at the heart of the military alliance, while Washington retains control over what intelligence it shares.

Who Controls the Information

Reports earlier in 2026 said a South Korean official disclosed U.S. intelligence about a secret North Korean nuclear facility. South Korean President Lee Jae Myung rejected the allegations as “absurd.” In June, local media reported that, at Washington’s request, South Korea’s spy agency didn’t attend a trilateral U.S.-Japan meeting on North Korea. Reduced intelligence cooperation has made it harder for Seoul to respond to Pyongyang’s growing nuclear arsenal, the report said.

The disputes have unfolded as North Korea increased missile tests and Trump floated restarting talks with Kim Jong Un. North Korea can produce as many as 20 nuclear weapons a year and has declared South Korea its “principal enemy,” according to the report. The United States keeps 28,000 troops on the Korean peninsula, with no sign it will withdraw them ahead of schedule.

Victor Cha, Korea chair at the Center for Strategic and International Studies, said the intelligence restrictions conveyed that the United States didn’t trust Korea as an ally. “It’s serious because it hits at the heart of the military alliance,” he said. Jenny Town, a senior fellow at the Stimson Center, said South Korea’s problems were “more pronounced in scope and severity” than those of other U.S. allies. She described an alliance “highly strained and losing trust.”

Trade Pressure and Seoul’s Response

Washington and Seoul have also faced months of friction over U.S. accusations that South Korea delayed its investment deal and discriminated against American-listed e-commerce company Coupang. The disputes have added weight to Trump’s threat of new trade penalties. Lee questioned Washington’s characterization of Seoul’s participation in a liquefied natural gas project in Alaska, saying cooperation depended on the deal being financially viable. Trump’s complaints that South Korea hadn’t done more to help with Iran, alongside unfulfilled U.S. promises to assist Seoul with nuclear-powered submarines, have further soured relations.

Lee told his cabinet that South Korea, as a sovereign nation, should “avoid a submissive or overly deferential approach in relations with other countries.” The report described his policy as “pragmatic diplomacy,” seeking warmer relations with China while maintaining close ties with the United States. Lee’s spy chief and unification minister were seen as part of a faction favoring better relations with Beijing, a position some analysts said had gone down badly among China hawks in Washington.

Political Stakes Inside the Alliance

Last month, South Korean President Lee met Trump briefly in New York on the sidelines of the United Nations General Assembly and sought help restarting dialogue with North Korea. “President Trump kindly reminded me of our plan to play golf,” Lee said after the 30-minute meeting. South Korea later formed a task force to prepare for a golf outing between the two men ahead of the Group of 20 summit in December, Yonhap News reported.

Domestic political pressures were intensifying the dispute, said Bloomberg Economics’ Adam Farrar. Trump was pushing the Alaska LNG project as he looked to bolster Republicans ahead of the midterms, while Lee had incentives to push back as he faced weak approval ratings. Former Vice President Kamala Harris criticized Trump in Seoul on Wednesday for cutting drills with South Korea and using tariffs to threaten partner nations. “Changing circumstances require a renewal of our commitment to South Korea,” she said. The State Department declined to comment, and the White House didn’t respond to a request for comment.