North Korea Vows to Expand Nuclear Forces

North Korea vows to expand its nuclear arsenal, citing growing U.S.-led military pressure and deepening regional security cooperation.

North Korean Vice Defense Minister Kim Kang Il speaks at the Beijing Xiangshan Forum amid heightened attention over Pyongyang’s expanding nuclear and missile capabilities.

North Korea has renewed its commitment to expanding its nuclear forces, saying the growing U.S.-led military buildup and closer security cooperation between Washington, Seoul and Tokyo justify strengthening its nuclear deterrent. The statement was delivered by North Korean Vice Defense Minister Kim Kang Il at the Beijing Xiangshan Forum on September 17, adding to concerns over the future of nuclear security on the Korean Peninsula.

Pyongyang Says Its Nuclear Forces Will Continue to Grow

Kim Kang Il said North Korea would continue strengthening its nuclear capabilities, arguing that the military environment surrounding the country requires Pyongyang to maintain and expand its strategic deterrent. His remarks specifically criticized growing military cooperation between the United States, South Korea and Japan, which North Korea has repeatedly described as a threat to its security.

Pyongyang's position contrasts sharply with that of Washington, Seoul and Tokyo. The three countries describe their military cooperation as part of a deterrence strategy intended to respond to North Korea's nuclear and missile programs. North Korea, however, portrays the same activities as evidence of an increasingly hostile military environment. This difference in interpretation has become a central feature of security dynamics in Northeast Asia.

The North Korean statement is also significant because it presents nuclear development as a continuing element of national defense rather than a temporary response to a specific military exercise or diplomatic dispute. By describing its nuclear status as effectively irreversible, Pyongyang is signaling that it does not currently view denuclearization as the basis for future security negotiations.

North Korea Rejects Calls for Denuclearization

The comments at the Xiangshan Forum came as North Korea again rejected international calls for denuclearization. Kim Yo Jong, the sister of North Korean leader Kim Jong Un and a senior official, said North Korea's status as a nuclear weapons state was absolute and could not be reversed.

Her remarks followed discussions at the International Atomic Energy Agency's General Conference in Vienna, where North Korea's nuclear activities remained a subject of international concern. Pyongyang has consistently rejected demands that it abandon its nuclear weapons program, arguing that its nuclear capabilities are necessary to protect the country against perceived external threats.

The statements from Kim Yo Jong and Kim Kang Il therefore reinforce the same broader message: North Korea considers its nuclear capability a permanent part of its security strategy and sees continued military development by the United States and its regional allies as justification for maintaining that posture.

Nuclear Infrastructure Remains Under International Scrutiny

North Korea's declarations are accompanied by continuing international monitoring of its nuclear infrastructure. The International Atomic Energy Agency has used satellite imagery and other available information to assess developments at nuclear-related sites, although international inspectors currently do not have access to North Korea's facilities.

IAEA assessments have identified indications of continued activity involving facilities associated with uranium enrichment and plutonium production at Yongbyon. The agency has also monitored developments involving the five-megawatt reactor and other nuclear infrastructure. However, the lack of direct access means the IAEA cannot independently verify the precise operational status, configuration or quantity of nuclear material at individual facilities.

That limitation is important when assessing North Korea's nuclear capabilities. Satellite imagery can identify construction, movement, infrastructure changes and other indicators of activity, but it cannot by itself establish the exact number of nuclear weapons North Korea possesses or determine the readiness of individual warheads.

Japan's 2026 Defense White Paper similarly assesses that North Korea has developed nuclear-related infrastructure capable of supporting both plutonium and highly enriched uranium production. Japanese defense assessments also describe continued efforts by Pyongyang to develop nuclear warheads and ballistic missile delivery systems.

U.S., South Korea and Japan Deepen Security Cooperation

The relationship between the United States, South Korea and Japan remains one of the most important factors shaping North Korea's security calculations. Washington maintains a longstanding defense commitment to Seoul, while Japan and South Korea have expanded trilateral cooperation with the United States on missile warning, military exercises and regional security.

From the perspective of the three allies, closer cooperation is intended to improve deterrence and their ability to respond to North Korean missile and nuclear threats. Pyongyang interprets those same developments differently, arguing that the three countries are creating an increasingly integrated military structure directed against North Korea.

This dynamic creates a persistent security dilemma on the Korean Peninsula. Military measures intended by one side to increase deterrence can be interpreted by the other as preparation for offensive action. That perception can then encourage additional military preparations, creating a cycle in which each side uses the other's actions to justify its own security policies.

North Korea's latest nuclear statement fits into that broader pattern. By explicitly connecting its nuclear expansion to U.S.-led military activity, Pyongyang is establishing a direct relationship between regional conventional security developments and its strategic weapons program.

Military AI and Nuclear Security Add Another Dimension

The timing of the announcement is also notable because the Xiangshan Forum has become a venue for wider discussions about emerging military technologies and strategic stability. International defense officials and experts attending the forum have discussed the risks associated with artificial intelligence, autonomous weapons and increasingly automated military decision-making.

The growing role of artificial intelligence in military systems is particularly relevant to nuclear security because automated or semi-automated decision-making could introduce new risks during a crisis. U.S. and Chinese security experts have recently discussed safeguards intended to ensure that humans retain control over nuclear decisions and other highly consequential military operations.

Although those discussions are separate from North Korea's nuclear policy, they illustrate how the strategic environment in Asia is becoming increasingly complex. Nuclear weapons, advanced missiles, artificial intelligence, cyber capabilities and conventional military forces are increasingly interconnected within regional defense planning.

China's Role in the Latest Developments

Kim Kang Il's remarks were delivered at the Beijing Xiangshan Forum, China's major international defense and security conference. North Korea's participation is significant because it provides Pyongyang with an opportunity to present its security position directly to an international audience that includes defense officials, military representatives and security experts.

The North Korean delegation was led by Kim Kang Il, marking a relatively high-level North Korean military presence at the forum. The participation also comes amid efforts by North Korea and China to maintain high-level political and diplomatic engagement.

China's hosting of the forum does not by itself establish that Beijing supports North Korea's nuclear policy. Instead, the event provides a platform for North Korean officials to explain their position and engage with representatives from other countries. Beijing continues to have its own strategic interests in maintaining stability on the Korean Peninsula while managing its broader relationship with both Washington and Pyongyang.

International Reactions

The international response remains centered on the continued development of North Korea's nuclear and missile capabilities. The International Atomic Energy Agency has maintained that its ability to assess the country's nuclear program is constrained by the absence of inspectors on the ground. Its satellite-based assessments indicate activity at several nuclear-related facilities, but the agency cannot independently verify the exact scale of North Korea's weapons program without access.

South Korea continues to support the goal of a nuclear-free Korean Peninsula and has maintained that North Korea should abandon its nuclear weapons and related programs in accordance with international obligations and relevant United Nations Security Council resolutions. Seoul is simultaneously strengthening its own defense cooperation with Washington and Tokyo in response to North Korean military developments.

North Korea, meanwhile, continues to reject the denuclearization framework. Its senior officials have repeatedly argued that abandoning its nuclear weapons would undermine national security and have instead emphasized the need to strengthen what Pyongyang describes as a defensive nuclear deterrent.

What to Watch Next

The most important question now is whether North Korea's latest declarations will be accompanied by additional military activity. The statement itself does not establish that Pyongyang is preparing for an imminent nuclear test, missile launch or other specific military operation. However, further activity involving nuclear facilities, ballistic missiles or strategic weapons could provide additional evidence of how North Korea intends to translate its stated policy into military capabilities.

Nuclear infrastructure at Yongbyon and suspected enrichment facilities will remain an important focus for international analysts. Satellite imagery and other open-source intelligence can provide indications of changes at these locations, although such assessments will continue to have limitations without direct inspection access.

North Korea's missile development will also remain closely watched because nuclear weapons require reliable delivery systems to provide a credible deterrent. Pyongyang has continued to develop different classes of ballistic missiles, while South Korea, Japan and the United States have invested in missile-warning, interception and strike capabilities intended to counter the threat.

Military cooperation between Washington, Seoul and Tokyo will be another important indicator. Additional exercises, missile-defense cooperation or strategic deployments could prompt further criticism from Pyongyang and potentially become part of its justification for expanding its nuclear and conventional forces.

A Continuing Nuclear Standoff

North Korea's latest statements underline the difficulty of changing the security environment on the Korean Peninsula. Pyongyang argues that its nuclear weapons are necessary because of military pressure from the United States and its allies, while Washington, Seoul and Tokyo maintain that their defense cooperation is necessary because of North Korea's nuclear and missile programs.

Those competing positions reinforce one another and make a rapid return to traditional denuclearization negotiations difficult. North Korea is increasingly presenting itself as a permanent nuclear-armed state rather than a country temporarily developing nuclear weapons as leverage for diplomatic negotiations.

For international observers, the distinction between rhetoric and measurable military activity remains critical. The latest statements clearly communicate Pyongyang's political position, but they do not by themselves establish the timing of any future weapons test or military operation.

The next indicators will therefore come from observable developments, including activity at nuclear facilities, missile testing, military deployments and diplomatic engagement. Until those developments occur, North Korea's latest declaration should be understood primarily as a reaffirmation of its stated nuclear policy and its opposition to the security architecture being developed by the United States, South Korea and Japan.