Analyzing the Dual-Track Structure of North Korea’s Response to Expanded Advanced Operational Elements in the ROK-US UFS Exercise

Executive Summary

In response to the August Ulchi Freedom Shield (UFS) exercise, North Korea has progressively escalated its backlash, perceiving the expansion of advanced operational elements—such as AI, drones, and cyber capabilities—as a signal of its deepening conventional military inferiority. Since President Trump ordered a scaling down of the drills, North Korea has maintained a dual-track strategy: showing a conciliatory attitude toward the United States regarding the possibility of resuming summit talks, while continuing to issue derisive condemnations of South Korea. The reduction in the scale of the exercise and the expansion of advanced operational scenarios are variables on different levels. North Korea has not withdrawn its objections to the latter and is likely to continue using it as a pretext for pressuring Seoul. The South Korean government needs to separate its military and political responses, managing extended deterrence credibility with Washington and narrative countermeasures with Pyongyang through distinct channels. Furthermore, preparing a consistent narrative that explains the defensive nature of its advanced capability enhancements is crucial to prevent a framing vacuum.

I. Situational Analysis

Situational Analysis: North Korea’s Backlash Over Expanded Elements in the ROK-US UFS Exercise

1. Background and Developments

North Korea’s statements targeting South Korea and the United States have escalated in stages since early August. Ahead of a short-range ballistic missile launch from the Wonsan area on August 6, a military commentator for the Korean Central News Agency (KCNA) described US-Japan-ROK cooperation as a “trinitarian threat that has solidified into a new security crisis.”[2][8] The commentary cited the RIMPAC exercise as a concrete example of this escalating threat.[2] Six days later, on the morning of August 12, a second launch occurred from the Wonsan area, with the missile heading toward Japan over the East Sea.[7][13] South Korea’s Joint Chiefs of Staff (JCS) assessed this as a protest provocation ahead of UFS.[4]

The rhetoric was elevated a step further on August 14 in a statement by a Foreign Ministry spokesperson. The statement specified that the exercise would mobilize “tens of thousands of troops and combat equipment, including forces from the United States, South Korea, and member states of the UN Command.”[1][4] It also noted that “various live-fire drills simulating an advanced operational environment,” such as unmanned aerial warfare, electronic warfare, and cyber warfare, were “scheduled to be carried out.”[1][4] Coupled with the US explanation that the exercise incorporated real-world combat experience gained from its deployments in response to Russia, North Korea took issue not with the routine nature of the drill but with the qualitative changes in its scenarios.[5]

When UFS actually commenced on August 17, KCNA issued a commentary the same day, raising the threat level again. The commentary pointed out that the drills were taking place in “all domains of actual wartime operational execution, including ground, sea, air, space, cyber, and psychological-information.”[4][7] It also specifically listed the participation of major units under the Eighth US Army, such as the 2nd Infantry Division, 19th Expeditionary Sustainment Command, 501st Military Intelligence Brigade, and 35th Air Defense Artillery Brigade.[4][7] The commentary declared, “Our right to self-defense to neutralize the military threat from hostile forces will be expressed through more explicit action.”[4][7] In a separate statement, a Foreign Ministry spokesperson defined US-Japan-ROK cooperation as transforming into a “nuclear alliance” and vowed to “respond to a new level of threat with a new level of deterrence.”[1][14]

2. Current Situation

This trend was abruptly halted on August 16 by President Trump’s order to scale down the exercise. Trump announced that he had instructed Secretary of Defense Hegseth to “drastically reduce” the scale of UFS, citing his “very good relationship” with Kim Jong Un and the cost burden.[15][17] The announcement, made on the very day UFS began, drew criticism from the South Korean opposition for having been made while effectively excluding the South Korean government.[15] The People Power Party described it as “Korea passing.”[15]

North Korea’s reaction varied depending on the target. In a late-night statement on August 19, Kim Yo Jong, a senior official of the Workers' Party of Korea, described the US-DPRK relationship as “excellent” in a message to the United States, signaling a move to maximize negotiating leverage over the potential resumption of a summit.[11] In contrast, a statement a day later on August 20 maintained a cold tone toward South Korea. Kim derided the UFS scale-down as “a half-baked exercise with its torso cut off without prior discussion” and “an empty shell with the substance removed.” She added, “At a single word from Trump, Seoul has found itself in the pitiful situation of having to pack up its favorite war games.”[9][18] She continued, “It is the fate of a puppet army, which has entrusted its command to its master, to be unable to utter a word of protest even when US forces beat a retreat based on a unilateral directive from the US commander-in-chief,” framing the ROK-US relationship as a “master-servant structure.”[11]

The South Korean government responded by positively assessing the US decision. On August 19, President Lee Jae-myung praised Trump’s order to scale down the drills and his attempt to resume US-DPRK dialogue as “a major decision reflecting deep consideration for creating peace on the Korean Peninsula beyond hostility and confrontation,” adding, “I pay my respects to that decision.”[19] In contrast, critical voices were heard within the United States. The Wall Street Journal argued in an editorial that scaling down the exercise was a decision that disregarded risk, pointing out that the Pentagon’s 2026 National Defense Strategy explicitly states that North Korea’s nuclear forces are “gradually acquiring the capability to threaten the US mainland.”[16]

3. Key Actors and Positions

North Korean Foreign Ministry & KCNA Military CommentatorsThese actors frame the expansion of AI, drone, and cyber elements in UFS as a substantive enhancement of an “invasion rehearsal.” Their statements take issue not with the routine nature of the exercise but with the qualitative changes in its scenarios, namely the incorporation of lessons from the war in Ukraine and the integration of multi-domain operational elements.[5][13] This channel is responsible for managing the overall message to the US, Japan, and South Korea, and for officially escalating the threat level.[1][4]

Kim Yo Jongoperates a separate channel. In her messages to the United States, she sends conciliatory signals that leave room for negotiation based on the personal relationship between the leaders. In contrast, her messages to South Korea maintain a cynical tone, highlighting the subordinate nature of the ROK-US relationship.[11][18] This dual-track approach was evident again during the recent episode of the exercise scale-down.

President Trumpunilaterally decided to scale down the exercise, citing his personal relationship with Kim Jong Un and cost considerations. The lack of prior consultation with the South Korean government in this decision-making process became a point of controversy.[15][17] Separately, the US Department of Defense, through its National Defense Strategy, officially recognizes the threat North Korea’s nuclear forces pose to the US, indicating a difference in temperature between the White House and the Pentagon.[16]

South Korean Governmenthas taken the position of positively accepting Trump’s decision, placing weight on creating an environment for dialogue.[19] However, this is a political message that differs in tone from the working-level position of the Ministry of National Defense and the JCS, which have been pursuing the expansion of UFS operational elements. As South Korea’s efforts to enhance its own exercise systems, including integrated government exercises, are still ongoing, a gap may exist between the president’s political message of welcome and the strengthening of readiness at the working level.

People Power Party and other opposition partieshave framed the manner of the decision to scale down the exercise as “Korea passing,” raising the possibility of a failure in alliance management.[15]

4. Core Issues

The first issue is that North Korea is objecting to the content of the scenarios, not the existence of the exercise itself. The AI, drone, and cyber elements are operational concepts validated on the battlefields of Ukraine, and North Korea interprets this as a sign of their potential real-world application against it.[5][13] This suggests that even if future exercises are scaled down, the pretext for protest may not disappear as long as the advanced operational elements themselves are maintained.

The second issue is that the decision to scale down the exercise unilaterally cut short the escalating trend of North Korean statements. Trump’s order, coming immediately after North Korea raised its threat level on August 17, acted as a factor forcing Pyongyang to recalculate its justification for a response and its potential gains. Kim Yo Jong’s focus on highlighting cracks in the ROK-US alliance—while deriding the exercise as an “empty shell” instead of threatening substantive military action—can be seen as a result of this recalculation.[9][18]

The third issue is the lack of transparency in the ROK-US decision-making system for exercises. The scale-down order, issued without prior consultation, leaves aside the question of alliance credibility and raises issues of coherence with South Korea’s own plans to enhance its advanced operational elements, such as its integrated government exercises. With North Korea operating a separate channel for inter-Korean affairs under its “two hostile states” policy, there is a need to manage the risk that the exercise scale-down could be misread as a signal of weakened deterrence against the South.

II. In-Depth Analysis

In-Depth Analysis: The Structure of North Korea’s Backlash to Expanded Advanced Operational Elements in the ROK-US UFS Exercise

1. Root Cause: Conventional Inferiority and the Race for Asymmetric Leverage

The reason North Korea specifically targets the AI, drone, and cyber elements of the UFS exercise lies in the gap in conventional military power. While advancing its nuclear forces as a central pillar, North Korea has simultaneously expanded its cyber and space capabilities. This stems from a structural motivation to offset its inferiority in conventional forces and economic power with asymmetric means.[12] The “cyber warrior” hacker units, cultivated since the beginning of Kim Jong Un’s rule, are the operational arm of this strategy.[12] The purpose of these units is to use a small, elite group within a closed society with limited internet access to bypass the sanctions regime targeting its missile and WMD programs.[12]

In this context, the ROK and the US combining AI-based target analysis, unmanned aerial warfare, and cyber warfare in UFS presents a dual threat to North Korea. One is the concern that it could fall behind in the competition to secure an advantage in information warfare. The other is the perception that the allies are gaining a technological edge in the very asymmetric domains that North Korea has relied on for leverage. The KCNA commentary on August 17, which specified that the exercise was being conducted in “all domains of actual wartime operational execution, including ground, sea, air, space, cyber, and psychological-information,” reflects this concern.[4][7] From North Korea’s perspective, this is not merely an issue of the exercise’s scale but a signal that its adversary is encroaching upon areas where it believed it held a comparative advantage.

2. Structural Context

Security Structure: Asymmetric Application of Lessons from the Ukraine War

US explanations have made it clear that this year’s UFS was designed to reflect lessons learned from the war in Ukraine.[13] This is the background for the strengthening of exercise elements “simulating an advanced operational environment,” such as unmanned aerial warfare, electronic warfare, and cyber warfare.[5] North Korea perceives this as a military innovation that works to its disadvantage. At the same time, given that North Korea itself is accumulating real-world combat experience through its deployments to Russia, this creates a structure of asymmetric arms competition in which both North and South Korea are incorporating lessons learned from different battlefields into their Korean Peninsula training scenarios.[5] North Korea’s focus on the “qualitative changes in the scenario content” rather than the routine nature of the exercise accurately identifies this structure.[5]

Political Structure: Dual-Track Messaging Channels and Target-Specific Differentiation

North Korea’s system of statements operates on separate tracks depending on the target. Commentaries under the name of the anonymous “military commentator” target US-Japan-ROK trilateral cooperation, while statements in Kim Yo Jong’s name deliver individual messages to South Korea and the United States, forming a dual structure.[2][8] Kim Yo Jong’s assessment of the US-DPRK relationship as “excellent” on August 19, leaving room for negotiation, followed by her derision of the UFS scale-down as an “empty shell with the substance removed” in her statement to the South the next day, is a practical example of this channel separation in action.[9][11] This should be seen not as a simple emotional outburst but as a calculated messaging design intended to manage negotiating leverage with Washington and Seoul separately.

Alliance Structure Fissures: Trump’s Exercise Scale-Down and the “Korea Passing” Controversy

President Trump’s August 16 order to scale down the exercise introduced a new variable into this structure. Citing his “very good relationship” with Kim Jong Un and the cost burden, Trump instructed Secretary of Defense Hegseth to “drastically reduce” the scale of the exercise.[15][17] This decision was announced on the day UFS began, without prior consultation with the South Korean government.[15] The People Power Party labeled it “Korea passing.”[15] In contrast, President Lee Jae-myung praised it as a decision “to create conditions for dialogue for building a peace regime on the Korean Peninsula” and welcomed it.[19] This contrast shows that interpretations of the exercise scale-down within South Korea are already divided along partisan lines.

Trump’s decision also sparked controversy in Washington. With the Pentagon’s 2026 National Security Strategy report stating that North Korea’s nuclear forces are “gradually acquiring the capability to threaten the US mainland,” criticism arose that scaling down the exercise was a decision that disregarded this threat.[16] This suggests a conflict within the United States between the priority of deterring North Korea and the priority of managing the relationship between the leaders.

3. Historical Precedents

Similarities to the 2018–2019 Singapore and Hanoi Summits

There are precedents from Trump’s first term when ROK-US joint military exercises were scaled down or suspended based on the personal rapport between the leaders. The current UFS scale-down is structurally similar to that period, when the suspension of large-scale exercises like Freedom Guardian sparked controversy over a decline in ROK-US military readiness. However, the current case differs in that the exercise was scaled down preemptively, before a summit has even been arranged. In 2018, the suspension of exercises followed the achievement of the Singapore summit. This time, the exercise scale-down came first, while the prospect of a summit remains uncertain. This could create a learning effect for North Korea, suggesting it can obtain concessions without even coming to the negotiating table.

Continuity of the “Trinitarian” Framing

North Korea’s rhetoric defining US-Japan-ROK cooperation as a “nuclear alliance” is not new. A commentary on August 5 had already described this trilateral cooperation as a “trinitarian threat that has solidified into a new security crisis.”[2][8] Citing the RIMPAC exercise as a concrete example of this threat follows the same line of logic.[2] The appearance of the term “nuclear alliance” in the August 17 commentary shows a pattern of this framing being repeated and reinforced during each exercise cycle.[1][14] This can be interpreted not as a one-off protest against an individual exercise but as part of a long-term strategy to continuously undermine the legitimacy of ROK-US-Japan minilateral cooperation itself.

4. Key Variables Shaping Future Developments

First is whether a US-DPRK summit materializes following the exercise scale-down. As Kim Yo Jong has left the door open for negotiations on the US channel, the level of pressure on South Korea might actually decrease if working-level contacts become visible. Conversely, if a summit fails to materialize, there is a risk that the derision of the “empty shell exercise” could transform into actual provocations.

Second is the tension between the hardline stance on North Korea within the Pentagon and the White House’s prioritization of summit diplomacy. The discrepancy between the North Korean nuclear threat assessment specified in the National Security Strategy report and the actual decision to scale down the exercise raises questions about the future consistency of US policy.[16] If this fissure is not resolved, similar confusion could recur in the planning of future exercises.

Third is whether North Korea will respond separately to South Korea’s own “integrated government exercises.” Although UFS has been scaled down, if South Korea continues with exercises that independently enhance its AI and cyber elements, North Korea is highly likely to continue its individual condemnations through its channel for inter-Korean affairs, separate from its messages regarding the ROK-US alliance. This suggests that the dual structure of the Kim Yo Jong channel and the military commentator channel will be maintained in the future.