Military power balance: The regional reality of the U.S.–China rivalry

The likelihood of military confrontation between the United States and China has, in recent years, become one of the most manipulated and simultaneously most misinterpreted subjects in global politics. Although many describe this rivalry as a simple “clash of two superpowers,” the actual dynamics are far more complex: a structural mismatch has emerged between Washington’s global military architecture and the regional system Beijing is constructing by leveraging its geographic advantages. It is precisely this mismatch that creates a new geostrategic scale in the security environment of the 21st century.

The core of China’s military modernization program lies not in the expansion of numerical capabilities, but in Beijing’s attempt to redesign its presence in the Western Pacific as a multilayered security environment. The militarization of island chains, dense deployment of A2/AD systems, and infrastructure that restricts maneuver options at sea—all of these grant China a form of “spatial control” superiority rather than classic kinetic power. While the U.S. military can project force globally, Beijing is steadily turning the 500–1500 km radius off its coast into an increasingly challenging operational zone for the United States.

Against this backdrop, Washington’s strategy is also shifting. The U.S. does not intend to return to a model of unilateral dominance in the Pacific; instead, platforms of structured cooperation such as AUKUS and the QUAD are moving to the forefront. These represent a new form of military balancing for the United States: rather than generating physical superiority in the region, Washington seeks to slow China’s expansionary rhythm to a manageable level through networked power. AUKUS’s submarine technology, trilateral intelligence integration among Australia, the United Kingdom, and the United States, and the QUAD’s maritime domain awareness mechanisms collectively establish a new normative framework for the region.

At this point, an analytical question becomes unavoidable: Could the United States lose a war with China?

Stripping away the dramatic tone, the reality becomes clearer: Washington’s global military capabilities remain systematically superior; yet any potential conflict would never erupt on a global scale. A confrontation could only occur in narrow and highly saturated spaces such as the Taiwan Strait or the South China Sea. In these locales, however, the United States cannot rely on its overall military advantage—because the physiology of warfare is dictated by geography. China can combine its geographic proximity, coastal missile systems, and the tactical radii generated by new maritime infrastructure to minimize America’s agility advantage. This is the central challenge for the United States: being a global power does not automatically guarantee maneuver freedom in a specific region.

China’s military-political presence in the South China Sea produces new categories of risk. The bases and radar systems built on the Spratly and Paracel archipelagos are no longer mere background decor for political signaling—they have become factors capable of altering operational decisions in real time. Whenever the United States conducts a freedom of navigation operation, the sensors on these islands no longer simply observe; they act as instruments measuring how U.S. naval power responds under pressure. This creates a constant arc of unpredictable escalation.

Naturally, this landscape does not automatically validate Beijing’s claims that it will possess “the world’s strongest military by 2060.” Such forecasts are often a blend of numerical projection and political myth-making. The determinants of future power balance extend far beyond budgets or troop numbers; the integration of artificial intelligence into command structures, the militarization of space, the outcome of the hypersonic competition, and the resilience of global supply chains will play a far more decisive role.

The military dimension of the U.S.–China rivalry today is not defined by the simplistic question of “who has the stronger army?” The real question is this: who stands in the more favorable battlespace, and who can reshape that battlespace to their advantage?

At present, neither side holds a definitive advantage; the shifting balance is rewriting the structure of global power politics.

The South China Sea has become a laboratory where the strategic claims of the United States and China are measured in real terms. Over the past decade, Beijing has expanded and militarized artificial islands, creating its own “blue zone” and turning the region into a de facto strategy proving ground. This transformation alters not only the military equation but also the direction of political cognition: Washington’s global power status is challenged by China not on a worldwide scale but specifically within this narrow maritime space.

The A2/AD (anti-access/area-denial) layer China has built here removes the sea from the classical theater of great-power operations and converts it into a “locked zone.” Each entrance of U.S. carrier strike groups into the region is no longer a simple show of force but an operation requiring strategic risk calculation. Beijing’s radar, missile, and logistics network undermines the previously automatic functioning of the U.S. doctrine of “freedom of movement.” China frames the sea here not as open waters, but as a multilayered defensive system.

This landscape is permeating NATO’s strategic thinking as well. For the first time, alliance assessments of the Indo-Pacific link the behavior of China’s navy directly to Euro-Atlantic security. Analysts increasingly discuss the possibility that China’s military infrastructure in the Pacific could create a “pressure diffusion” effect toward the Arctic, Indian Ocean, and Red Sea in the future. Thus, the issue is not merely regional security; it is the testing of Western maritime dominance in one of its symbolically critical theaters.

Within this context, AUKUS and the QUAD are essential tools for strengthening the U.S. position in the Pacific. The stationing of AUKUS nuclear submarines in Australia represents an attempt to operate behind China’s military geography. The QUAD, meanwhile, systematizes maritime oversight through intelligence-sharing and coordinated patrols. By merging these mechanisms, Washington seeks to narrow Beijing’s regional maneuvering space—though the results have yet to fully crystallize.

In this broader picture, the central question remains unchanged: In a potential confrontation in the South China Sea, will the United States truly maintain superiority, or will the region become a showcase for China’s short-term tactical dominance?
The realization of this scenario raises a deeper question: to what extent could a U.S. setback here transform the global distribution of power?

At the global level, America’s military resources remain incomparably vast. Yet even a local mishap in the South China Sea could deliver a symbolic blow to Washington. The loss of superiority here concerns not just military power but the legitimacy of order: who is the actual guardian of international maritime rules? Who ensures the security of trade routes? If the United States loses its claim to these questions, China could climb to the upper tiers of the global influence hierarchy—starting from the region.

Thus, the struggle has not yet entered the stage of global hegemony; the South China Sea is its preparatory scenario. The regional advantage lies with China, while the broader strategic significance favors the United States. And it is precisely this contradiction that forms one of the most critical geopolitical knots of the 21st century.

Shabnam Zeynalova,
Expert of the Baku Political Scientists’ Club (Center),
PhD in Political Science, Associate Professor