China Fires SLBM From Nuclear Sub Into Pacific
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- China test-fired a long-range SLBM from a nuclear-powered submarine into the South Pacific on Monday, marking only the third full-range Pacific launch after tests in 1980 and September 2024.
- Nuclear experts have identified the submarine leg as the weak link of China's nuclear triad, and the SSBN-based launch validates guidance accuracy and full-trajectory performance that domestic lofted tests cannot — advancing China's "second-strike" capability since submarines are far harder to detect than ground-based launchers.
- The timing came days after a reported U.S. deployment of an Iron Dome-type missile defense system in Japan and hours after Australia and Fiji signed a formal mutual defense treaty — events that complicate Beijing's regional security calculus even though China described the launch as "routine" training.
- Japanese Prime Minister Sanae Takaichi's November 2025 remarks linking Taiwan's defense to Japan's national survival triggered a more aggressive Chinese diplomatic and military posture toward Japan and accelerated Tokyo's military integration with the U.S. and the Philippines.
- Beijing and Moscow have enhanced joint military activities and exercises to counter growing U.S. and allied military engagement, while Manila has doubled down on military cooperation with Washington and Tokyo amid escalating South China Sea disputes.
- Washington and its Asia-Pacific allies face a deterrence paradox: their military buildup to counter China's saber-rattling emboldens Beijing to ratchet up its own deterrence, sharpening a security dilemma that neither side's defensive moves can break.
Why it matters: China validated the sea-based leg of its nuclear triad by firing an SLBM from a nuclear-powered submarine into the Pacific — its first such sub-launched full-range test — giving Beijing a far more survivable deterrent against the backdrop of an expanding U.S. missile-defense network in Japan and a new Australia-Fiji mutual defense pact.
