Archive · 22 Sep 2026
United States, Japan, South Korea Deepen Technology and Security Ties
The United States, Japan and South Korea agreed to work more closely together.
They want to cooperate on computers, chips, quantum technology and other important technologies.
They also want to make supply chains less vulnerable to disruptions.
The countries discussed North Korea’s nuclear weapons and missiles.
They said North Korea should give up its nuclear weapons and return to talks.
They also plan to cooperate against cyberattacks and sanctions evasion.
The three countries will work together on energy security, disaster relief and maritime safety.
They also want to help stop scam centres that exploit trafficked workers.
The countries reaffirmed their security commitments and support for stability in the Indo-Pacific.
The United States, Japan and South Korea agreed to expand cooperation on artificial intelligence, semiconductors, quantum technology and critical supply chains.
The foreign ministers reaffirmed support for North Korea’s complete denuclearisation and urged Pyongyang to return to dialogue.
The three countries pledged stronger coordination against North Korea’s nuclear, missile, cyber and sanctions-evasion activities.
They created an economic security consultation mechanism and agreed to improve early warnings for supply-chain disruptions.
The countries also backed energy resilience, small modular reactors, maritime security, disaster relief and action against Southeast Asian scam centres.
- Who
- United States Secretary of State Marco Rubio, Japanese Foreign Minister Motegi Toshimitsu and South Korean Foreign Minister Cho Hyun.
- What
- They agreed to deepen trilateral cooperation on technology, economic security, North Korea, energy, maritime security and law enforcement.
- When
- During the high-level week of the United Nations General Assembly.
- Where
- New York.
- Why
- To strengthen security cooperation, protect critical supply chains, address North Korean threats and improve regional resilience.
- Technology priorities
- Artificial intelligence, semiconductors, quantum technology, digital infrastructure and biotechnology.
- North Korea
- The countries reaffirmed support for complete denuclearisation and urged a return to dialogue.
- Economic security
- A new consultation mechanism and an enhanced early-warning system for supply-chain disruptions were announced.
- Energy cooperation
- The countries supported larger oil stockpiles and cooperation between energy-producing and energy-consuming countries.
- Nuclear energy
- They agreed to implement a July memorandum supporting the deployment of small modular nuclear reactors abroad under high safety and non-proliferation standards.
- Regional security
- They reaffirmed United States defence commitments to Japan and South Korea, including extended nuclear deterrence.
- Law enforcement
- The countries will work with the United Nations Office on Drugs and Crime against organised criminal networks, including scam centres in Southeast Asia.