How Australian SSNs will fit into multi-domain deterrence

ASPI The Strategist Institutional·2026-06-26AUS DefenceP6: Defence Surge P7: Alliance Architecture

Why it matters

The incoming Chief of Defence Force explicitly positions Australian SSNs as the apex strategic deterrent in multi-domain defence, validating AUKUS submarine investment and reinforcing Australia's commitment to the capability despite multi-year delays. This rhetorical and strategic emphasis on SSN denial posture directly supports Pillar 6 (Maritime Defence) and Pillar 7 (Alliance) readiness against PLA power projection and Taiwan contingency.

Read the original report at ASPI The Strategist

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Where this sits in the model

This development bears on 2 of the eight pillars of Australian preparedness — the overall picture right now is 5/100.

P6: Defence Surge0/100 P7: Alliance Architecture25/100

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