Forget the signalling: China’s missile test is part of an alarming nuclear buildup

China's successful validation of a long-range SLBM from a submerged platform closes a critical gap in its nuclear deterrent, achieving a credible second-strike capability that directly threatens Australian security and the stability of the Indo-Pacific. This development elevates pressure on Australia and its AUKUS partners to accelerate deterrent modernisation and intensifies the strategic urgency of the attack-submarine program, while simultaneously raising the threshold for conventional escalation in Taiwan and maritime scenarios.