By Xie Ruiqiang and Jiang Jingyuan
According to a consensus reached by the United States and the Republic of Korea (ROK), Ulchi Freedom Shield (UFS), the ongoing US-ROK joint military exercise, will conclude on August 21, 2026. Originally scheduled to run from August 17 to 27, the exercise is one of the major annual joint military exercises conducted by the two militaries, aimed at testing their joint defense capabilities and ability to respond to contingencies on the Korean Peninsula, and featuring computer simulations and field maneuver training.
ROK media noted that it is rare for a US-ROK joint military exercise that is fully underway to be adjusted midway at the request of the US side. The scaling back of the exercise not only affects the ROK's arrangements for advancing the transfer of wartime operational control (OPCON), but also renews concerns over the Trump administration's security commitment to the ROK and the feature of the US-ROK alliance.
Scaling back of exercise adds uncertainty to US-ROK relations
In recent years, the ROK has been pushing for the gradual transfer of wartime OPCON to the ROK military, regarding joint exercises as an important platform for testing the ROK military's operational capabilities and advancing assessments of the relevant conditions.
The Associated Press quoted analysts as saying that joint training is crucial for maintaining interoperability between the two militaries, particularly as command personnel and operational systems continue to evolve, with such capabilities requiring sustained training to maintain. The ROK therefore worries that the scaling back of the exercise could affect scheduled operational capability assessments and consequently slow the process of transferring wartime OPCON.
Trump's decision this time is not aimed solely at military issues on the Korean Peninsula. Reuters reported that during his first term, Trump also criticized US-ROK joint military exercises for their high costs and demanded that the ROK shoulder a larger share of defense costs. His latest request to scale back the exercise continues his long-standing policy of reducing US military burdens overseas and requiring allies to assume greater security responsibilities.
Meanwhile, the Trump administration is also attempting to restart direct engagement with the Democratic People's Republic of Korea (DPRK). The sudden scaling back of the exercise can be seen as a goodwill gesture by Trump aimed at improving US-DPRK relations. Trump said on August 19, 2026 that he planned to meet with DPRK top leader Kim Jong Un later this year and that he maintained a good relationship with Kim. Given that the DPRK has recently taken no hostile action against the Trump administration, continuing large-scale military exercises would send an "inappropriate and hostile" signal to Pyongyang.
Trump's "sudden" statement heightens ROK concerns over alliance reliability
At the level of military cooperation, joint military exercises are not only an important means for the two militaries to test their combat readiness, but also a crucial mechanism for maintaining interoperability and familiarizing them with the joint command structure. Reuters reported that although an adjustment to the scale of a single exercise would not alter the long-established US-ROK military cooperation framework, changes in the frequency and scale of training could still affect the two sides' ability to maintain proficiency in joint operations.
US-ROK joint military exercises have long served not only a military training function, but also an important platform for the two countries to coordinate security policies and maintain their alliance. If the US increasingly makes unilateral adjustments to issues such as its military deployments in the ROK and joint training, the ROK's level of participation in alliance decision-making and its expectations regarding the stability of US security commitments could both be affected.
This adjustment may also prompt the ROK to further reassess its path toward defense autonomy. If the US reduces some of the military roles on the Korean Peninsula, the ROK will need to enhance its own ability to shoulder security responsibilities. The ROK's efforts in recent years to advance the transfer of wartime OPCON also reflect its goal of strengthening its independent defense capabilities. Therefore, reduced US military involvement and the ROK's pursuit of defense autonomy are not entirely at odds.
As the Trump administration continues to emphasize greater responsibility on the part of its allies and the ROK accelerates its pursuit of defense autonomy, the US-ROK alliance is entering a new period of adjustment. How the two sides balance security dependence, strategic autonomy, and exchanges of interests will profoundly affect the security landscape of the Korean Peninsula.
Editor's Note: Originally published on thepaper.cn, this article is translated from Chinese into English and edited by the China Military Online. The information and opinions in this article do not necessarily reflect the views of eng.chinamil.com.cn.