Introduction
The Pacific Islands, comprising Melanesia, Micronesia, and Polynesia, have moved from the margins of global affairs to a position of growing geopolitical importance. Often described as “large ocean nations,” these states collectively exercise sovereignty over vast maritime spaces and hold equal voting power at the United Nations.
Their Exclusive Economic Zones cover roughly 20 per cent of the world’s ocean under national jurisdiction, giving them significant influence over fisheries, sea lanes, and seabed resources. Pacific leaders have reframed the region as the Blue Pacific, a shared political and strategic identity grounded in the ocean: a framing that reflects both unity and agency, positioning Pacific Island states as active participants in global governance.
A Changing Geopolitical Environment
The strategic importance of the Pacific is tied to broader shifts in global power. For much of the post–Second World War period, the Pacific was shaped by U.S. maritime dominance, at times described as an “American lake.” Today, this balance is evolving. China’s rapid rise, especially since Xi Jinping’s leadership from 2013, has significantly expanded its presence through infrastructure investment, diplomatic engagement, and the Belt and Road Initiative. At the same time, China is modernising its naval capabilities and extending its reach into the Pacific.
In response, the United States has adapted its posture by developing a more flexible and distributed military presence across the western Pacific, often in partnership with allies such as Australia. The result is an increasingly visible contest for influence across the region.
Key dynamics shaping the region include:
- Growing U.S.–China strategic competition
- Expansion of Chinese economic and diplomatic engagement
- U.S. efforts to reinforce alliances and regional presence
- Increasing strategic attention on Pacific Island states
Pacific Island Agency and Strategic Positioning
Despite this competition, Pacific Island countries are not passive actors. They actively shape their own geopolitical strategies through pragmatic engagement with multiple partners.
- Some states maintain closer ties with the United States, others with China
- Most pursue a flexible, non-aligned approach
- External competition is leveraged to secure development, infrastructure, and climate support
Regionalism and the Blue Pacific
Regional cooperation is central to Pacific strategy. The Pacific Islands Forum serves as the region’s primary diplomatic platform, enabling coordinated responses to shared challenges while The Blue Pacific framework, developed since 2017, reinforces a collective identity and strengthens regional unity. Unlike European-style regionalism, Pacific regionalism is primarily political rather than economic and reflects a shared understanding that unity enhances influence in a competitive international environment. It functions as:
- A platform for collective diplomacy
- A mechanism to assert sovereignty
- A way to amplify the region’s voice in global affairs
The Ocean as a Political and Cultural Space
Pacific societies have a fundamentally different relationship with the ocean compared to Western perspectives. As Epeli Hauʻofa, a Tongan and Fijian writer and anthropologist, described, Pacific peoples are “Oceanic peoples,” connected across vast distances by shared histories and relationships with the sea. This worldview underpins both regional unity and diplomatic strategy by accepting that:
- The ocean is not seen as an empty space, but as a lived and connected environment
- It links communities culturally, economically, and politically
- It forms the basis of identity and regional cohesion
Climate Change: The Central Security Challenge
Climate change is the most urgent issue facing the region and the core of Pacific security concerns. Rising sea levels, ocean warming, and increasingly severe weather patterns are not distant risks but immediate and ongoing realities. For many low-lying atoll states, the implications are profound: land is eroding, freshwater resources are under pressure, and entire communities face questions about long-term habitability.
In more severe scenarios of global warming, the viability of certain island ecosystems could be fundamentally undermined, posing a direct challenge to territorial integrity and, in some cases, to the continuity of statehood itself. This makes climate change not only an environmental issue but a political and existential one to which Pacific Island countries have responded with sustained and coordinated diplomacy.
Since the early 1990s, they have consistently advocated for ambitious global climate action, using multilateral platforms to amplify their voice. Through alliances such as the Alliance of Small Island States (AOSIS), they have contributed to shaping major international agreements, demonstrating that even small states can exert considerable influence when acting collectively and strategically.
- The ocean is not seen as an empty space, but as a lived and connected environment
- It links communities culturally, economically, and politically
- It forms the basis of identity and regional cohesion
External Actors and Regional Dynamics
External engagement in the Pacific has intensified as global competition increases, particularly between the United States and China, with Australia playing a central regional role.
China’s growing presence is especially notable. Under Xi Jinping, Beijing has significantly expanded its engagement in the Pacific, combining diplomatic outreach with large-scale economic initiatives. Infrastructure investments, development financing, and trade incentives have strengthened its relationships across the region. At the same time, China has sought to deepen multilateral engagement through regional forums, aligning with broader “South-South” cooperation frameworks.
The United States has responded by reinforcing its strategic commitments and alliances. Australia, in particular, occupies a critical position as both a regional actor and a close U.S. ally. It has increased its engagement through initiatives such as the “Pacific Step Up,” expanding diplomatic, economic, and security cooperation. However, this engagement is not without tension.
While Australia is deeply embedded in regional structures, it is sometimes perceived as pursuing its own strategic priorities, particularly in maintaining influence and limiting external competition.
Across these interactions, Pacific Island states have demonstrated a consistent approach: engagement without dependence. Rather than aligning rigidly with one power, they maintain diversified relationships, ensuring that no single actor dominates their strategic landscape. This reinforces their autonomy while allowing them to benefit from multiple sources of support.
Conclusion: Agency in a Contested Ocean
The Pacific Islands now sit at the intersection of two defining global dynamics: intensifying great-power competition and the accelerating impacts of climate change. These forces are reshaping the strategic importance of the region, drawing increased attention from global actors and elevating its role in international affairs. Yet the defining feature of this moment is not external pressure, but internal agency.
Through the Blue Pacific vision, Pacific Island states are articulating a collective identity that is both strategic and political. This identity allows them to coordinate their diplomacy, assert their priorities, and engage with external powers on more equal terms. Their influence is visible in global climate negotiations, in debates over ocean governance, and in the way they navigate complex geopolitical relationships.
While external powers continue to compete for influence, Pacific Island countries are actively shaping the terms of that engagement. By leveraging their oceanic identity, their collective diplomacy, and their strategic positioning, Pacific Island states are transforming geopolitical attention into meaningful influence. The future of Pacific geopolitics will depend not only on the actions of major powers, but on the continued ability of island states to assert their sovereignty, strengthen regional cooperation, and define their own place within an evolving Indo-Pacific order.