S. Korea reaffirms agreed conditions for OPCON transfer, USFK chief suggests otherwise

The transfer of wartime operational control from the US to South Korea is in the spotlight once again after a top USFK commander hinted that transfer conditions had changed amid reports of Seoul's defenses being overrun by North Korea in a simulated exercise.

Speaking at a press briefing in Seoul, Defense Ministry spokesperson Chung Binna stressed that the "ministry's principle, that wartime operational control will be transferred when the conditions mutually agreed upon by South Korea and the United States are met, remains unchanged."

Chung said the allies have conducted joint assessments this year to verify full operational capability, or FOC — the second of a three-stage verification process — in accordance with their conditions-based OPCON transition plan.

"The remaining differences will be resolved by the Security Consultative Meeting in accordance with the conditions and evaluation criteria mutually agreed upon by South Korea and the United States," she said. The SCM is the allies' annual defense ministers' meeting, where the two sides discuss major defense and security issues.

She was responding to questions about remarks by Gen. Xavier Brunson, commander of US Forces Korea, who said Wednesday in Washington that "conditions have changed" and that the allies have "new standards" to uphold as their plans have evolved.

Asked to assess Brunson's remarks, Chung declined to attach a specific interpretation to them.

Brunson said Wednesday during the annual Indo-Pacific Summit hosted by the Gold Institute for International Strategy that he supports the OPCON transition but opposes moving ahead without meeting the required conditions.

"Because the conditions have changed, because we've changed our plan, we have new standards which we have to uphold," Brunson said, citing North Korea's missile launches earlier this week as an example of the changing security environment.

Brunson also stressed that the transition should not take place simply because a politically sought deadline has arrived, in an apparent reference to calls in Seoul to complete the process before 2030.

"We don't have the benefit of changing the conditions to time," he said, stressing that the transition hinges on critical military capabilities and the ability to fully carry out required missions.

Conditions-based transfer

Brunson's remarks drew attention amid differences between Seoul and Washington over whether conditions required for the transition have been sufficiently met. The Lee Jae Myung administration seeks to regain wartime OPCON before Lee's term ends in 2030.

South Korea transferred operational control of its military to the US-led United Nations Command during the Korean War and regained peacetime OPCON in 1994. Wartime OPCON remains with the South Korea-US Combined Forces Command.

At their 2014 Security Consultative Meeting, the allies shifted to a conditions-based OPCON transition and established the Conditions-based OPCON Transition Plan the following year. The plan requires South Korea to demonstrate the ability to lead combined defense, respond to North Korea's nuclear and missile threats, and ensure a security environment conducive to a stable transition.

The verification process measures initial operational capability, or IOC; full operational capability, or FOC; and full mission capability, or FMC. IOC was certified in 2019, and the allies are now working to complete FOC verification.

Still, Brunson's comments have not been reflected in any officially announced changes to the allies' agreed transition plan. Asked whether his remarks signaled a change to the conditions agreed by the two countries, USFK's public affairs office also said the allies remain committed to a conditions-based transition.

The two sides "remain committed to advancing the conditions-based transition of wartime operational control," the office said, adding that their defense chiefs reaffirmed at the November 2025 SCM "the necessity of fulfilling the conditions in the current plan."

Questions over changing North Korean threat

Brunson's emphasis on changing conditions comes as questions have emerged over whether the allies face a greater threat from North Korea, particularly as it gains battlefield experience through its military involvement in Russia's war against Ukraine.

According to a local report Wednesday, North Korean forces advanced through South Korean frontline defenses to within several kilometers of Seoul during a computer-simulated scenario in the allies' Ulchi Freedom Shield exercise in August.

The report suggested the outcome had raised questions about South Korea's ability to lead combined wartime operations.

The Joint Chiefs of Staff, however, dismissed the report.

"Military exercises and training, including UFS, are conducted under various challenging scenarios," Navy Capt. Jang Do-young, director of public affairs at the JCS, said during a briefing at the Defense Ministry headquarters in Seoul on Thursday.

"The report that Seoul was put at risk because South Korean forces led defensive operations is not true," Jang said, adding that this year's UFS was conducted under the leadership of the Combined Forces Command commander.

USFK chief calls for more frequent, dispersed training

Brunson has also recently called for changes in how the allies conduct combined training, pointing to the changing battlefield environment and lessons North Korean troops may be gaining from the war in Ukraine.

Speaking at a US Army event in Washington earlier this week, Brunson questioned the allies' traditional focus: "For a long time, we trained for two big exercises every year," Brunson said. "We've got to move away from that."

"What would happen if we trained in between those exercises?" he added.

Brunson said he has been discussing with South Korean Combined Forces Command Deputy Commander Gen. Kim Sung-min ways to conduct more geographically dispersed operations, including training across areas stretching from Jeju Island to Gyeonggi Province.

South Korean military officials have said his remarks should not be interpreted as calling for the existing large-scale command post exercises to be scrapped, but rather as proposing additional distributed training between the regular exercises.

Meanwhile, further high-level discussions on the issue could take place later this month.

Defense Minister Kang Shin-chul is scheduled to attend the ASEAN Defense Ministers' Meeting-Plus in Cebu, the Philippines, later this month, where he could meet US Defense Secretary Pete Hegseth amid the allies' ongoing discussions over the OPCON transition.

Kang is expected to attend the gathering from around Oct. 27 to 30, with Seoul and Washington coordinating a possible meeting between the two defense chiefs.

If held, it would mark their first face-to-face meeting since Kang took office and could provide an opportunity to discuss their assessments of the OPCON transition conditions.