Analysis of Trump's Order to Scale Down ROK-US Combined Exercises and the Possibility of a North Korea-US Summit

Executive Summary

On the day the Ulchi Freedom Shield exercise was set to begin, President Trump ordered a significant reduction in its scale, citing three reasons simultaneously: his personal rapport with Kim Jong Un, dissatisfaction with exercise costs, and South Korea's non-cooperation on the Iran issue. This decision appears to have a dual purpose, not merely cost-saving but also signaling dialogue with North Korea while pressuring South Korea to share more responsibility. Given North Korea's heightened rhetoric prior to the exercise, it is unlikely that the reduction will immediately lead to a North Korea-US summit. The most probable scenario is that the scaled-down measures will be maintained formally, with dialogue remaining in a stalemate. The South Korean government needs to ascertain the specific scope of the reductions from the US side and prepare response criteria for potential escalations in demands regarding defense cost-sharing and contributions to the Strait of Hormuz. For businesses, particularly defense contractors, the immediate priority is to assess the ripple effects of the exercise reduction on weapons procurement schedules and discussions about readjusting the US Forces Korea presence.

I. Issue Situation Analysis

Issue Situation Analysis: Trump's Order to Scale Down ROK-US Combined Exercises and the Korean Peninsula Situation

1. Background and Progress

The Ulchi Freedom Shield (UFS) exercise was scheduled to take place from August 17 to 27. On August 16 (local time), the day before the exercise began, President Trump posted on his social media platform, Truth Social. He stated that he had instructed Secretary of Defense Hagerty to "drastically reduce" the scale of the exercise [1][4].

Trump presented two reasons. One was his "very good relationship" with Kim Jong Un [1][6]. He claimed that North Korea had shown a "non-threatening and respectful attitude" during his term [1]. The other reason was the cost of the exercises. He mentioned that he "doesn't like that the United States agreed a long time ago to help South Korea with military exercises" [4]. He also added his dissatisfaction that the US bears a significant portion of the costs [4][17].

The issue of Iran was additionally brought up. Trump alleged that President Lee Jae-myung refused a request for cooperation on Iran's denuclearization [6][10]. He also used the expression that the exercise sent a "totally inappropriate and hostile" signal to North Korea [17][18].

It is important to note that this exercise was not a routine drill. According to EAI analysis, North Korea's Ministry of Foreign Affairs, in a statement on August 13, raised concerns about a "qualitative change in the scenario content, rather than its regularity" [2]. This reaction coincided with the US explanation that practical experience accumulated through North Korea's deployment to Russia had been reflected in the exercise scenarios [2]. North Korea's response rhetoric had also been elevated to a "new level of deterrence" [2].

2. Current Situation

Despite Trump's announcement, the exercise commenced as scheduled [13]. South Korean government officials conveyed to foreign media their hope that the "personal chemistry" between Trump and Kim Jong Un would lead to a resumption of dialogue [13]. As of the time of this report, the specific items to be affected by the reduction measures had not been specified.

The reaction from the domestic political sphere was immediate. The People Power Party criticized the move, stating that "South Korea was completely bypassed" [1]. The unilateral announcement made on the morning of the exercise's commencement was the core of the controversy [4].

In response to the criticism regarding insufficient contribution to the Iran issue, the government publicly mentioned for the first time the phrase "military contribution to the Strait of Hormuz" [8]. The Hankyoreh interpreted this as the government emphasizing its willingness to contribute [8]. It was also assessed that the exercise reduction card simultaneously served as an "invitation" for dialogue to North Korea and a pressure tactic against South Korea [8].

There is a common thread in the reporting by overseas media. AP, Reuters, WSJ, and Politico all treated Trump's announcement as an extension of his "transactional approach to allies" [10][12][16][17]. Daily Sabah described it as "Trump's latest rebuke to Western allies" [13]. Kyodo News also focused on the aspect of citing personal friendship with Kim Jong Un as a reason for the reduction [18].

3. Key Actors and Positions

President Trumpframed this action in terms of personal trust and cost issues. His favorable remarks about Kim Jong Un are not new. EAI analysis points out that Trump has repeatedly emphasized the need for "communication" and dialogue with Kim Jong Un since the beginning of his term [11]. However, the State Department has a history of reaffirming the goal of "complete denuclearization of North Korea" through forums like the Munich Security Conference [11]. This highlights a gap between the President's personal, impulsive decisions and the official objectives of the administration's working-level officials [9].

South Korean Governmentis under dual pressure. The reduction in exercises has raised concerns about the credibility of extended deterrence, while simultaneously facing demands for further contributions on the Iran issue [8]. The move to publicly consider a military contribution to the Strait of Hormuz is seen as an immediate response to this pressure [8].

Domestic Political Circles, including the People Power Partyare linking the controversy over being bypassed to the government's diplomatic capabilities with the US [1]. The timing of the announcement on the day of the exercise is the focus of criticism.

North Koreahad already elevated its rhetoric in statements prior to this exercise [2]. The key to the future situation is how Kim Jong Un will react to Trump's announcement of the exercise reduction [1]. EAI analysis assesses that the "step-by-step pattern of commentary-launch-statement" is being maintained, making it uncertain whether the elevated rhetoric will directly lead to an increase in provocations [2].

US Department of Defense (Secretary Hagerty)is the entity responsible for implementing this directive. However, the fact that the actual exercise began as scheduled [13] indicates a time lag or discrepancy between the presidential directive and its on-the-ground execution.

4. Key Issues

The first issue is the effectiveness of extended deterrence. If the reduction in exercises leads to a scaling down of scenario content, it would effectively reverse the "qualitative change" that served as the basis for North Korea's elevated rhetoric [2]. This directly relates to the consistency of the ROK-US deterrence posture.

The second issue is the predictability of alliance operations. The timing of the announcement on the day the exercise commenced suggests it was made without prior consultation with the South Korean government [1][4]. This, along with rumors of reviewing troop reductions [5], has the potential to escalate into a broader trust issue regarding alliance operations.

The third issue is the linkage with the Iran issue. Trump's decision to combine the unrelated issue of Iran as a justification for reducing the ROK-US exercises reaffirms his characteristic negotiation style of leveraging inter-security issue linkages for pressure [7]. South Korea's public mention of considering a contribution to the Strait of Hormuz is a response to this linked pressure [8].

The fourth issue is Kim Jong Un's response. For the exercise reduction to lead to a resumption of dialogue, reciprocal measures from North Korea are necessary. To date, no official North Korean response has been confirmed.

II. In-depth Issue Analysis

In-depth Issue Analysis: Structural Background and Variables in the Development of Trump's Order to Scale Down ROK-US Combined Exercises

1. Analysis of Fundamental Causes

The stated reasons for this action were threefold: personal friendship with Kim Jong Un, the cost burden of the exercises, and South Korea's lack of cooperation on the Iran issue [4][6]. However, it is difficult to assign equal weight to these three reasons.

The cost issue is a recurring theme from Trump's first term. EAI analysis defines the core of Trump's second-term foreign and security policy as "linking security with economics to demand increased responsibility and cost-sharing from allies and friendly nations" [7]. The reduction in exercises is not a new logic but an extension of this existing transactional approach.

The Iran issue is a newly added variable for pressure. In June, Trump signed a Memorandum of Understanding (MOU) with Iran to end hostile acts and reopen the Strait of Hormuz [3]. However, this ceasefire regime was unstable, and CFR questioned its sustainability, stating, "What the regime wants is clear" [3]. In this context, the allegation of South Korea's refusal to cooperate was used as leverage to pressure allied solidarity in the anti-Iran front [6][10].

The mention of a "very good relationship" with Kim Jong Un is the most unusual of the three reasons [1]. The timing of the announcement, on the morning of the exercise's commencement, was itself a message [4]. Given that the signal for dialogue towards North Korea and the message of bypassing South Korea were combined in the same post, this action should be viewed not as a simple cost-saving measure but as a decision with a dual purpose, targeting both the approach to North Korea and pressure on South Korea simultaneously [8].

2. Structural Context

Political Structure: The pattern of decision-making in Trump's second administration being driven by the President's personal judgment rather than institutional processes has been confirmed multiple times. EAI points out that "critical views are being raised that major US decisions are being made through Trump's personal, impulsive judgments" [9]. This decision, like others, was first revealed via a social media post without prior coordination with working-level departments such as the Department of Defense and the State Department. The very expression of instructing Secretary Hagerty indicates that the decision had already been made, placing the Department of Defense in a position of implementing it [1][4].

Alliance Structure: The ROK-US alliance had already been under pressure for change even before this incident. In May, there were reports that the US Department of Defense was considering transferring approximately 4,500 troops out of the approximately 28,500 US Forces Korea personnel to other areas in the Indo-Pacific [5]. This reduction in exercises should not be seen as an isolated event but as part of a larger structural adjustment, including the reassessment of the size and role of USFK.

Security Structure: The fact that the exercise itself was different in nature from previous years at the time the reduction was ordered is also a structural background factor. North Korea characterized this UFS as a matter of "qualitative change in the scenario content, rather than its regularity," elevating its rhetoric to a "new level of deterrence" [2]. This reaction coincided with the US explanation that North Korea's practical experience gained from its deployment to Russia had been reflected in the exercise scenarios [2]. In essence, the order to reduce the exercise came abruptly during a period of its intensification. This clearly reveals the gap between military necessity and political decision-making.

3. Historical Precedents and Comparison with Similar Cases

There were similar patterns during Trump's first term. Following the Singapore summit in 2018, Trump referred to the ROK-US combined exercises as "war games" and declared their suspension. At that time, the controversy also centered on the fact that the announcement was made impulsively at a press conference immediately after the summit, without prior coordination with the Department of Defense and the Joint Chiefs of Staff. The commonalities with the current case are clear: the decision was made under the pretext of improving relations with North Korea, and the relevant departments were informed afterward.

There are also differences. In 2018, there was a concrete outcome in the form of the summit, and the suspension of exercises was a follow-up measure. This time, the reduction of exercises was presented proactively before a summit. The order of events has been reversed. This suggests the possibility that Trump preemptively offered the exercise card as an incentive to arrange another meeting with Kim Jong Un.

The case of NATO is also worth noting. EAI records Trump's pressure on Germany during his first term regarding its lukewarm response to increasing defense spending, where he threatened to withdraw US troops stationed in Germany and redeploy them to Poland [5]. Similar to the current case with South Korea, this pattern of using security commitments themselves as leverage when allies are passive in meeting US demands (cost-sharing, cooperation on specific foreign policy issues) is recurring. The agreement by European countries in June 2025 to increase defense spending to 5% of GDP by 2035 at the NATO summit was also a result of such pressure [5]. Given the ongoing pressure on South Korea for increased defense cost-sharing, higher defense budgets, and the purchase of US-made weapons [5], the current exercise reduction cannot be ruled out as a potential additional pressure tactic in future defense cost-sharing negotiations.

4. Key Variables in Issue Development

North Korea's Response: It remains uncertain whether the elevated rhetoric will actually lead to provocations. EAI analyzes that the "step-by-step pattern of commentary-launch-statement" observed in the launches on August 6 and 12 is being maintained [2]. The most likely scenario involves repeated low-intensity military demonstrations [2]. Whether North Korea perceives the exercise reduction as a signal for dialogue resumption and responds accordingly, or conversely, reacts with increased hostility, deeming the reduction insufficient, are indicators to watch in the next three to four weeks.

Prospect of a Summit: Since Trump has preemptively offered the exercise card, discussions for a North Korea-US summit could accelerate if Kim Jong Un reciprocates. However, the official objective of the Trump administration's second term remains "complete, verifiable, and irreversible denuclearization" [11]. The key will be how the gap between the incentive of exercise reduction and the goal of complete denuclearization is reconciled at the negotiation table. It remains to be seen whether Kim Jong Un will agree to direct leader-level talks without prior working-level negotiations, as in the past, or demand preconditions.

Linkage with ROK-US Defense Cost-Sharing NegotiationsThis measure is not a one-off event but could be combined with future renegotiations of the Special Measures Agreement (SMA) or discussions on the redeployment of US Forces Korea (USFK). If the review of the potential relocation of 4,500 USFK troops, which surfaced in May, [5] and the current reduction in exercises are handled within the same framework, South Korea's bargaining leverage would be significantly narrowed.

South Korean Domestic Political DynamicsThe People Power Party's "passing" frame and the government's mention of "military contribution to Hormuz" [1][8] are likely to become sources of future conflict between the ruling and opposition parties. If the government fails to present concrete measures for contribution to Iran, Trump's pressure could extend beyond the exercise issue to other security and economic matters. Conversely, if the government concretizes its contribution to Hormuz, it will be the first test case for assessing the Lee Jae-myung administration's approach to managing its relationship with the US.