Key Facts
• On July 28, 2025, Japan’s Ministry of Defense announced its first ‘Space Defense Guidelines’.
• The guidelines aim to strengthen satellite protection against threats like ‘killer satellites’ from China and Russia.
• Space is officially designated as a ‘new combat domain’ in the guidelines.
• Focus areas include enhancing satellite communication stability and protection capabilities.
• Plans include developing ‘bodyguard satellites’ by 2030 to counter enemy threats.
• The guidelines emphasize building satellite networks resistant to jamming and improving interoperability with allied nations.
• Defense Minister Gen Nakatani highlighted the importance of integrating advanced private-sector space technologies.
• The strategy also incorporates using space for stand-off defense capabilities, symbolizing a new phase in Japan’s space defense strategy.
Summary
Japan’s Ministry of Defense has introduced its first-ever ‘Space Defense Guidelines’ to address emerging threats in space, particularly from Chinese and Russian ‘killer satellites.’ The guidelines classify space as a critical combat domain and outline measures to protect Japan’s satellites, which are vital for communication, weather observation, and national security. Key initiatives include developing ‘bodyguard satellites’ by 2030, enhancing satellite communication networks resistant to jamming, and fostering interoperability with allied nations. Defense Minister Gen Nakatani emphasized the role of private-sector space technologies in advancing these efforts. The guidelines also propose leveraging space for stand-off defense capabilities, marking a significant evolution in Japan’s space defense strategy.
