Bilateral defence declarations are increasingly substituting for formal alliances in India's foreign policy. Critically examine with the India-Australia case.

India has consistently avoided treaty alliances, relying instead on non-binding bilateral instruments. The India-Australia Joint Declaration on Defence and Security Cooperation (9 July 2026) [1] illustrates this preference — yet such declarations substitute for alliances only partially, offering depth without the certainty of mutual defence obligations.

How declarations perform alliance-like functions

• Institutional layering: The 2009 Strategic Partnership was upgraded to a Comprehensive Strategic Partnership in 2020, with eight agreements including the Mutual Logistics Support Arrangement [3]; the 2026 Declaration adds a further tier.
• Operational interoperability: expanded aircraft deployments, more complex exercises and enhanced information sharing approach alliance-grade military integration [1].
• Maritime and technology depth: the India-Australia Maritime Security Collaboration Roadmap and Australia-India PACTS (Cyber, Critical Technologies and Supply Chains) extend cooperation to critical minerals and supply-chain resilience [1].
• Sustained machinery: recurring Defence Ministers' Dialogues and Defence Policy Talks give continuity that one-off summits lack [2].

Limits of the substitution

• No mutual defence guarantee: unlike NATO's Article 5 or ANZUS, the Declaration creates political commitment, not automatic assistance — deterrence value is correspondingly weaker.
• Non-binding and reversible: implementation depends on political will; the MoU on Provision of Defence Articles and Defence Services remains under development [2].
• Divergent alignments: Australia's AUKUS commitments and India's continued strategic autonomy, including legacy Russian platforms, constrain full convergence.
• Capacity gaps: interoperability requires sustained budgetary and logistical follow-through beyond declaratory intent.

Thus, bilateral declarations do not replace alliances so much as offer India a calibrated alternative — cooperation without entanglement, consistent with strategic autonomy and multi-alignment. Their effectiveness will depend on converting declaratory commitments into signed instruments, joint production and habitual interoperability. Nested within Quad, ASEAN and IORA frameworks [1], this incremental, issue-based architecture remains India's most credible route to a free, open and rules-based Indo-Pacific.