The global order is fragmenting into competing blocs

The claim that the post-Cold War liberal international order is giving way to competing blocs centered on the United States, China, and possibly the European Union raises fundamental questions about the trajectory of global governance, economic integration, and security architecture. At stake is not merely an academic taxonomy of international relations but the practical question of whether states, firms, and individuals will increasingly operate within segmented spheres of influence—with distinct technological ecosystems, regulatory regimes, and normative frameworks—or whether residual interdependence and middle-power agency will prevent a clean partition of the world. The available evidence is drawn from institutional assessments, peer-reviewed scholarship, and quantitative analyses of collaboration and supply-chain networks, and it supports the broad direction of the claim while introducing important qualifications about the shape and completeness of the fragmentation underway. The strongest evidence for bloc fragmentation comes from the structural erosion of the multilateral institutions that once embodied the liberal international order. The Carnegie Endowment's 2023 assessment of global governance finds that resurgent great-power rivalry has upended major-power threat perceptions and undermined cooperation across domains as varied as counterterrorism and arms control, indicating that the institutional scaffolding of the post-Cold War order is no longer performing its integrative function. This institutional dysfunction is not merely procedural but ideological: peer-reviewed analysis in Global Studies Quarterly demonstrates that states now advance fundamentally incompatible normative frameworks—Western liberal versus non-Western developmental sovereignty—within the same international bodies, reflecting competing visions of world order rather than a shared consensus amenable to compromise. Beyond normative divergence, material and technological infrastructure is hardening along geopolitical fault lines, providing concrete evidence that bloc formation is not merely rhetorical. China's strategic leverage over rare earth supply chains and the escalating semiconductor trade wars are entrenching geopolitical divisions into distinct competing technological ecosystems, as documented in a detailed institutional analysis of rare-earth weaponization. Quantitative analysis of global scientific collaboration networks corroborates this structural separation, finding measurable fragmentation along geopolitical lines with declining cross-bloc knowledge diffusion as nations prioritize competitive national research ecosystems. The drivers of fragmentation appear to be structural rather than episodic, rooted in the socio-economic disruptions of uneven globalization. Peer-reviewed analysis argues that fragmented globalization is not a neutral reordering but a terrain shaped by great-power competition, with smaller states increasingly positioned as sites of strategic contestation rather than autonomous participants in a shared rules-based system. Populist and protectionist pressures generated by these material forces challenge the liberal order's domestic political foundations in both advanced and developing economies, suggesting that fragmentation is self-reinforcing rather than easily reversible through diplomatic initiative. Against the fragmentation thesis, deep functional interdependence persists across geopolitical divides, and the very urgency with which international organizations warn against decoupling suggests that full separation into sealed blocs has not yet materialized. UNESCO's analysis of science decoupling warns against severing global knowledge flows precisely because cross-national exchange of data, samples, and expertise remains central to breakthroughs in climate science, genomics, and artificial intelligence. That decoupling is treated as a danger to be avoided rather than an accomplished fact implies that cooperative infrastructure retains significant operational value, and that the trajectory toward fragmentation, while real, is incomplete and contested. Notably, the same quantitative study cited in support of fragmentation also provides indirect evidence for the con position: the fact that declining cross-bloc knowledge diffusion is measurable but not yet total indicates that significant residual linkages remain, and that the process is gradual rather than a fait accompli. This suggests that the claim's framing of replacement—the liberal order 'replaced by' competing blocs—may overstate the degree to which the transition is complete, even if the direction of travel is broadly correct. The most significant qualification to the claim is that the emerging fragmentation is multipolar and fluid rather than a clean US-China binary, with middle powers actively resisting alignment with either superpower bloc. The Asia Society Policy Institute finds that Asian middle powers such as Indonesia, India, and Vietnam are cultivating strategic autonomy and hedging between Washington and Beijing rather than subordinating themselves to either camp. Similarly, the Institute for Economics and Peace documents how middle powers such as the UAE, Türkiye, and Indonesia are building independent regional influence, suggesting the outcome is a more complex constellation of competing centers of gravity rather than a simple bifurcation. A second important boundary condition is that fragmentation may produce rival functional orders rather than systemic collapse, a qualitatively different outcome from the breakdown of order altogether. Peer-reviewed analysis argues that while global multilateral institutions face deadlock, regional blocs—particularly the EU—retain the capacity to enforce rules in competition policy, digital governance, and data regulation, creating competing but internally coherent regulatory regimes. This distinction matters because the claim's language of 'competing blocs' could describe either a world of rival but rule-governed spheres or a world of anarchic disorder; the evidence more strongly supports the former interpretation. The evidence base, while strong in documenting fragmentation trends, contains notable structural gaps that limit the precision of any verdict on the claim. The con side is supported by only a single argument drawing on one primary source (UNESCO), supplemented by a reinterpretation of a pro-side dataset; no dedicated economic analyses of trade interdependence, financial integration, or capital flows are present in the bundle to test the resilience of cross-bloc economic ties. The bundle also lacks evidence on the domestic political economy of fragmentation—for example, whether protectionist pressures in the US or EU are durable or cyclical—which would be necessary to assess whether the structural drivers identified by Prasad et al. are likely to intensify or plateau. Additionally, the claim names the EU as a possible third bloc, but the evidence treats the EU primarily as a regulatory actor rather than a geopolitical pole comparable to the US or China; this asymmetry leaves the three-bloc framing partially unexamined. Finally, the structural classification flags unresolved conflict-of-interest considerations as a key uncertainty driver, though no specific evidence items in the bundle are identified as compromised; this warrants caution in treating institutional reports from organizations with policy stakes in the outcome as fully disinterested assessments. The weight of evidence supports the claim's core proposition—that the post-Cold War liberal international order is fragmenting under the pressure of great-power competition, technological decoupling, and normative divergence—but the claim's specific framing of a clean replacement by US, China, and EU blocs overstates both the completeness and the tidiness of the process. Institutional assessments and peer-reviewed scholarship converge on the finding that multilateral governance is structurally weakened and that material infrastructure—from rare earths to scientific collaboration networks—is measurably separating along geopolitical lines. However, the emerging order is more accurately described as multipolar and fluid than as a neat tripartite partition: middle powers are hedging rather than aligning, residual interdependence constrains full decoupling, and fragmentation is producing competing regulatory regimes rather than systemic collapse. Confidence in the directional finding—that fragmentation is real and structurally driven—is high, supported by converging evidence from multiple source types. Confidence in the claim's specific three-bloc architecture is lower, constrained by the thinness of the con-side evidence base, the absence of dedicated economic interdependence data, and the demonstrated agency of middle powers that resist binary alignment. The dominant uncertainty driver is the gap between the well-documented trend of fragmentation and the poorly specified endpoint: whether the world is converging on stable competing blocs, a more anarchic multipolarity, or some hybrid outcome remains an open empirical question.