Northeast AsiaPartnerships

South Korea-U.S. alliance expands to address cyber, space threats

Felix Kim

In a significant advance for the South Korea-United States alliance, cyber and space threats have been formally recognized as potential triggers under the nations’ 1953 Mutual Defense Treaty, expanding the scope of cooperation beyond traditional military domains. The evolution, announced following the recent bilateral ministerial meeting in Washington, D.C., reflects growing concerns over intensified North Korea-Russia security collaboration, including satellite technology transfers and cyber operations that challenge regional stability.

South Korean Foreign Affairs Minister Cho Tae-yul speaks at an October 2024 news conference. “We have reconfirmed that the ROK [Republic of Korea]-U.S. Mutual Defense Treaty extends to space and cyberspace domains as well,” he said. “Deterrence in these areas will be further bolstered, as we agreed. In addition, cooperation in defense, science and technology, as well as defense industry, will be further reinforced to render the foundation of the alliance even stronger. To safeguard the rules-based international order in the Indo-Pacific, we agreed to continue working in close concert. We opposed any unilateral attempts to change the status quo in the region. Freedom of navigation and overflight is among the fundamental rights and obligations of the UNCLOS [United Nations Convention on the Law of the Sea] and international law, establishing a maritime order, where such is guaranteed as crucial, as we reaffirmed.”
VIDEO CREDIT: U.S. STATE DEPARTMENT

U.S. Defense Secretary Lloyd Austin made clear that “attacks in space or cyberspace that clearly challenge the security of the alliance could lead us to invoke Article III of the Mutual Defense Treaty.” That clause requires mutual defense if either party faces an attack deemed a threat to its peace and safety.

The announcement arrives amid deepening concerns over closer links between Russia and North Korea, with fears that Russian technology transfers could enable Pyongyang to advance its cyber capabilities and space initiatives. “North Korea has been very active on the cyber side, engaging in hacking and information theft, often posing as conference organizers seeking expert input on specific topics,” Dr. Bruce Bennett, a Northeast Asia military expert at the Rand Corp., told FORUM.

The expanded treaty scope will enable more extensive intelligence sharing and collaborative defense initiatives between Seoul and Washington, reflecting strategic efforts to counter space-based threats, such as satellite interference or reconnaissance disruption, analysts say.

North Korea could seek to develop space-based technologies to disable South Korean or U.S. satellites, Yang Uk, a research fellow at the Seoul-based Asan Institute for Policy Studies, told The Korea Herald newspaper. In response, South Korea’s recently established Strategic Command for space and cyber operations has enhanced its ability to coordinate with its U.S. counterparts. The new command will collaborate with the U.S. Strategic Command and U.S. Indo-Pacific Command, enabling an integrated response to cyber and space-based incidents, Joung Kyeong-woon, a senior research fellow at the Seoul Defense Forum, told The Korea Herald.

The move aligns with South Korea’s plans to enhance its space capabilities, which currently include satellite deployments critical for tracking North Korean missile activities.

Increasing military ties between North Korea and Russia add urgency to the expansion of the South Korea-U.S. alliance’s scope. Pyongyang has been supplying Moscow with munitions for its illegal war in Ukraine and recently deployed several thousand troops to augment Russian forces suffering heavy battlefield losses. Those actions violate multiple United Nations Security Council resolutions that impose sanctions against the North Korean regime over its illicit missile and nuclear programs.

Defense leaders worldwide have voiced concern over Russia potentially providing advanced military technology to North Korea in return, which also would violate U.N. Security Council resolutions. Austin said such assistance could “embolden” Pyongyang to increase its destabilizing activities, including recent intercontinental ballistic missile (ICBM) tests.

The enhanced cyber and space provisions of the South Korea-U.S. treaty not only address specific threats from North Korea and Russia but also anticipate future challenges. “If South Korea spots movements, like an ICBM being moved, it’s invaluable for both nations,” Bennett said, underscoring the critical role of real-time intelligence in countering missile threats.

Felix Kim is a FORUM contributor reporting from Seoul, South Korea.

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