AUKUS is still in its infancy; likewise, the academic debate has still to run its course. In this article, we have sought to contribute to the emerging scholarship by taking a world order perspective, arguing that AUKUS is an order-engineering project informed by logic of orders of exclusion, marking a decisive shift from the previous incarnation of US-led liberal internationalism that historically sought to be inclusive, even to competitors like China. The sharpest edge of AUKUS’ exclusive character lies in the partners’ commitment to military interoperability, particularly concerning submarines development under Pillar I. We argue debates that reduce AUKUS to a simple technology sharing agreement overlook the fundamental catalyzing impact that the pact will have on alignment of grand strategy between the partners—concerning both security interdependencies and supply chain integration—as well as the broader strategic order-engineering project they are seeking to achieve in the Indo-Pacific. Moreover, this focus on the novelty of the technology sharing arrangements serves to obscure the fundamentally conservative goal that such sharing seeks to achieve, namely the overlapping strategic objectives of the core Anglosphere to conserve US primacy in the Indo-Pacific, rather than enabling a balance of power in the true sense of the term.

What we argue here is that the nature of both the AUKUS agreement itself and its symbiotic pillar architecture will bind the partners almost irreversibly together in their security posture, with any efforts to depart from this model becoming more time-consuming, difficult, and costly as time goes on. There is also a danger that the partners could find themselves embracing a sunk-cost fallacy in AUKUS, especially in Australia’s case, not least due to the powerful organizational and bureaucratic forces that almost certainly will seek to retain the submarines program, transcending any rational cost–benefit calculus. We also observe that efforts to bind Australia and the UK into US supply chains for critical minerals and strategic technologies represent a decisive step in hastening decoupling from China, part of Washington’s quest to prevail in the global technology race. Lastly, we find that the exclusive character of AUKUS is already starting to have real-world implications for the Indo-Pacific, both in terms of alienating China and the polarizing impacts on other regional states, under pressure to make a binary choice between Washington and non-alignment. This presents a dilemma for AUKUS as its ability to securitize the region—and contain China—as well as its deterrence value are dependent not only on firepower but being perceived as legitimate and inclusive.

Ultimately, AUKUS is a risky venture but one that will play out over decades, so its long-term impacts may not be known by this generation of scholars. There are certain risk mitigation strategies that can be taken by the partners, most evidently in seeking greater legitimacy for the pact which could entail membership being extended to those Indo-Pacific states with which they share values and strategic outlook—thereby ending the Anglosphere trap. Most of all, the trio will need to be cognisant of the dangers of US-China hostilities spilling over. Henry Kissinger warned of this in 2021 when he said tensions “have multiplied the doomsday threat”; he advised that US policy might take a “two-pronged approach: standing firm on American principles to demand China’s respect, while maintaining a constant dialogue and finding areas of cooperation” (quoted in The Guardian 2021). This delicate balancing act that Kissinger as US Secretary of State pulled off during the Cold War lays a useful blueprint to remind us of other routes that may exist in navigating strategic competition. Indeed, there may yet be scope for Washington to focus its engagement on the Indo-Pacific towards encouraging de-escalation and seeking out cooperation with Beijing in some mutually beneficial areas, most obviously these being trade diplomacy, economic development, and the path to net zero. This article has outlined a picture of what a contemporary security and defense bloc looks like, based on highly integrated forms of technology sharing and military interoperability; future scholarship on AUKUS and other minilateral partnerships may seek to identify ways in which rules-based principles and national security can coexist with mutual cooperation and de-escalation.