South Korean President Lee Jae Myung called for accelerated military self-reliance after U.S. President Donald Trump scaled back annual joint military drills [1].

This shift represents a significant pivot in the security architecture of East Asia. By reducing reliance on the U.S. military umbrella, South Korea aims to mitigate the risks associated with political unpredictability in Washington.

Lee said he urged faster efforts to regain wartime operational control, known as OPCON, of South Korean forces from the United States [1]. Under the current arrangement, the U.S. maintains primary command during wartime, a structure that has existed since the Korean War. Regaining this control would allow Seoul to direct its own military strategy and deployment during a conflict [2].

Beyond command structures, Lee said he advocated for the development of nuclear-powered submarines [1]. These vessels would provide South Korea with enhanced stealth and endurance capabilities, allowing the navy to monitor regional threats more effectively without frequent refueling. The push for such advanced weaponry comes as the administration seeks to ensure that national defense capabilities remain robust regardless of changes in U.S. foreign policy [2].

The move follows recent decisions by President Trump to reduce the scale of joint exercises [1]. These drills have traditionally served as a deterrent against regional aggression and a means of ensuring interoperability between the two allies. The reduction of these activities has created uncertainty regarding the consistency of the U.S. security guarantee [2].

Seoul is now framing these military advancements as a necessity for national survival. By diversifying its defense capabilities and reclaiming operational autonomy, the administration intends to create a more stable, and independent security posture [1].

“South Korea aims to mitigate the risks associated with political unpredictability in Washington.”

The push for OPCON and nuclear-powered submarines signals a transition from a dependent security relationship to a strategic partnership. If South Korea successfully reduces its reliance on U.S. command and increases its independent strike capabilities, it may alter the balance of power in the Indo-Pacific and pressure other regional allies to pursue similar autonomy.