China’s Pacific SLBM Test Signals a New Phase in Undersea Nuclear Competition

China's SLBM test in the Pacific demonstrates accelerating development of survivable sea-based nuclear deterrent (Type 094/096), directly narrowing Australia's strategic cushion and eroding AUKUS-allied undersea dominance upon which Australia's maritime defence and alliance cohesion depend. This capability expansion—operating closer to Australian waters and regional allies—raises the threshold for allied intervention in Taiwan scenarios and signals China's intent to deny sea control in the Indo-Pacific, directly challenging Pillar 6 (Maritime Defence) and Pillar 8 (Northern Arc) preparedness.