As the world's institutions and analysts have spent two decades proclaiming the arrival of multipolarity, the actual distribution of comprehensive power has quietly moved in the opposite direction. The United States and China have not merely remained dominant — they have together widened the distance between themselves and every other state, concentrating economic output, manufacturing, and research capacity at a pace that outstrips the rise of any third contender. What the end of American unipolarity produced was not a diffusion of power among many, but the emergence of a second superpower —
The Bipolar Illusion: Why US-China Dominance, Not Multipolarity, Defines Global Order
Strategic autonomy is not polarity. Diplomatic insubordination is not polarity.
Mark
So the argument is that we're not actually seeing power spread out across the world—we're seeing it concentrate at the top?
Mimi
Exactly. China closed the gap with the US, which ended American unipolarity. But at the same time, both of them pulled away from everyone else. That's the key move the multipolarity narrative misses.
Luke
But how do you measure "pulling away"? The numbers on GDP and R&D are clear. But what about military capability? Russia has nuclear weapons. India has a billion people and is growing fast.
Mimi
Right, and those things matter. Russia is genuinely important. But importance isn't the same as being a pole. A pole requires comprehensive power—economic, technological, financial, military, all of it working together. Russia has nuclear weapons and military strength, but its economy is smaller than Texas.
Mark
So when Turkey or Saudi Arabia refuse to align with the US or China, that's not evidence of multipolarity?
Mimi
No. It's evidence of bipolar competition. When two superpowers are fighting for influence, the states in between get leverage. They can hedge, extract concessions, play one side against the other. That's not new—it happened during the Cold War too.
Luke
I want to push back on the R&D numbers. You say the US and China together account for 58.6 percent of global R&D. But that's still less than 60 percent. That means 40 percent is distributed elsewhere. Doesn't that suggest some diffusion?
Mimi
It does suggest diffusion from the old Western powers. But the question is where the power went. A disproportionate amount went to China. The EU's share fell from 23.6 to 17.6 percent. Japan's fell from 14.3 to 6.7 percent. So you're seeing concentration at the top, not diffusion.
Mark
What about artificial intelligence? The piece suggests AI could accelerate all of this.
Mimi
If AI becomes as transformative as some claim, the resources to develop it are already concentrated in the US and China. They have the capital, the semiconductors, the computing infrastructure, the talent. So the benefits would compound their existing advantages.
Luke
But that's speculative. We don't know if AI will be transformative. And even if it is, there's no guarantee the US and China will be the only ones who benefit.
Mimi
True. But the argument for bipolarity doesn't depend on AI. The concentration of power is already demonstrable over the past twenty-five years using conventional measures. AI is just a potential accelerator.
Mark
So what comes next? If the world is becoming bipolar, what does that mean for everyone else?
Luke
That's the real question the piece doesn't fully answer. It describes the structure, but the implications for policy, for alliances, for conflict—those are still unclear.
Il Polso
- The conventional wisdom of multipolarity is colliding with a harder material truth: two states now command 43% of global GDP and nearly 59% of all R&D spending, figures that have grown, not shrunk, over the past quarter-century.
- Every nation celebrated as a rising pole — India, Turkey, Brazil, Russia — reveals on closer inspection not structural weight but bargaining leverage, the freedom that secondary states gain precisely because two superpowers are competing for their alignment.
- Russia's vast nuclear arsenal complicates the picture but does not resolve it; destructive capacity sitting atop a narrow economic and technological base is not the same as the full-spectrum, full-stack power that defines a genuine pole.
- Artificial intelligence threatens to deepen the divide further, as frontier AI development demands the kind of capital, semiconductor infrastructure, and technological ecosystems that only the two existing superpowers can currently sustain at scale.
- The multipolarity narrative persists not because the evidence supports it, but because nearly every actor — from Moscow to Brussels to New Delhi — has a political or psychological stake in believing it to be true.
As the world's institutions and analysts have spent two decades proclaiming the arrival of multipolarity, the actual distribution of comprehensive power has quietly moved in the opposite direction. The United States and China have not merely remained dominant — they have together widened the distance between themselves and every other state, concentrating economic output, manufacturing, and research capacity at a pace that outstrips the rise of any third contender. What the end of American unipolarity produced was not a diffusion of power among many, but the emergence of a second superpower — a structural reality that diplomatic hedging and regional ambition cannot dissolve.
The world is becoming more bipolar, not less — and the claim cuts against nearly every government, international organization, and policy institute that has spent two decades insisting otherwise. The logic of multipolarity sounds reasonable: if American primacy is fading, power must be dispersing. But the logic breaks down. The end of unipolarity does not automatically produce many poles. It can produce something else: a second superpower.
Over the past quarter-century, two transformations have unfolded together. China has closed the gap with the United States across economic output, manufacturing, research, technology, and military capacity. Simultaneously, both the US and China have widened the distance separating themselves from every other state. The first process ended American unipolarity. The second prevented genuine multipolarity from taking its place.
A pole, properly understood, is not a state that excels in one domain. It is a state with full-spectrum, full-stack capability — strength across economic, industrial, technological, financial, military, and network dimensions, combined with the institutional capacity to convert those resources into actual power. Only two states presently possess something approaching this whole architecture.
The numbers make the concentration plain. The US and China together accounted for roughly one-third of world GDP at the century's start; today they account for 43 percent. In R&D, their combined share rose from 43.7 percent in 2000 to 58.6 percent by 2024, while Europe's and Japan's shares fell sharply. In manufacturing, the two together represent nearly 47 percent of global value added. The era supposedly defined by diffusion has instead produced greater concentration at the summit.
The multipolarity narrative mistakes strategic autonomy for structural change. India's non-alignment, Turkey's maneuvering, Saudi Arabia's partnership diversification — these are real, but they reflect the bargaining leverage secondary states acquire when two superpowers compete for their support. During the Cold War, Yugoslavia, Egypt, and India all pursued considerable autonomy. No one concluded the system was multipolar. The same logic applies now.
Russia presents the most serious counterargument, possessing one of the world's two largest nuclear arsenals. But nuclear and conventional military capacity sitting atop a narrow economic and technological base does not constitute full-spectrum power. Destructive capacity alone cannot define polarity.
The multipolarity concept persists partly because nearly everyone has an interest in believing it. Russia claims great power status through it. India borrows future prestige from it. Europe avoids confronting its own strategic marginalization. But international structure is determined by the distribution of capabilities, not by diplomatic preference.
Artificial intelligence may accelerate the process further. Frontier AI demands capital, advanced semiconductors, computing infrastructure, and sophisticated technological ecosystems — resources the US and China are committing at a scale that separates them sharply from the rest of the world. The irony is difficult to miss: multipolarity has become conventional wisdom at precisely the moment when the material distribution of power is moving decisively in the opposite direction.
The world is becoming more bipolar, not less. This claim runs against the grain of nearly every government, international organization, and policy institute that has spent the past two decades insisting the opposite—that American dominance is fading, that China has risen, that India is growing, that Russia has returned, that the unipolar moment is dead and multipolarity has arrived. The argument sounds logical. If American primacy is declining, the reasoning goes, then power must be dispersing. But the logic breaks down under scrutiny. The end of unipolarity does not automatically produce multipolarity. It can produce something else entirely: a second superpower.
Over the past quarter-century, two transformations have unfolded in tandem. China has narrowed the gap between itself and the United States across every major dimension of national capability—economic output, manufacturing, research and development, technological sophistication, military capacity. Simultaneously, both the US and China have widened the distance separating themselves from every other state on earth. The first process destroyed American unipolarity. The second prevented the emergence of a genuinely multipolar system. What remains is not a world of many poles but a world increasingly organized around two.
To understand this requires clarity about what a pole actually is. In the realist tradition, a pole is not a state that excels in one category. It is a state that possesses comprehensive power—what might be called full-spectrum, full-stack capability. Full-spectrum means substantial strength across economic, industrial, technological, financial, military, nuclear, demographic, maritime, and network dimensions. Full-stack means the capacity to connect these layers, to transform raw resources into usable power. The stack begins with underlying resources: population, territory, geography, natural resources, energy. Above that sits latent power: wealth, industrial capacity, technological sophistication, human capital. These convert into manifest capabilities: military forces, financial instruments, positions of centrality in trade and logistics networks. Finally comes strategic conversion—the political and institutional capacity to mobilize all of this and translate it into actual effects. Only two states presently possess something approaching this whole architecture: the United States and China.
The numbers reveal the concentration starkly. At the turn of the century, the US and China together accounted for roughly one-third of world GDP at market exchange rates. Today they account for 43 percent. During a quarter-century supposedly characterized by the diffusion of economic power, the share of output concentrated at the summit actually increased. The pattern is even sharper in research and development, the engine of future capability. In 2000, the US accounted for 38.9 percent of global R&D spending and China for only 4.8 percent. Together they represented 43.7 percent. By 2024, China's share had risen to 29.6 percent and America's stood at 29 percent. Together they accounted for 58.6 percent of global R&D. The European Union's share fell from 23.6 percent to 17.6 percent. Japan's fell from 14.3 percent to 6.7 percent. Manufacturing tells the same story: China now accounts for approximately 32 percent of global manufacturing value added, the US another 15 percent. Together they represent almost 47 percent of world manufacturing production. Japan, Germany, India, and South Korea combined account for little more than 17 percent.
The multipolarity narrative mistakes strategic autonomy for structural change. India refuses alignment. Turkey maneuvers continuously. Saudi Arabia diversifies partnerships. Brazil seeks greater autonomy. BRICS expands. These developments are real and significant, but they do not constitute multipolarity. They reflect something else: the bargaining leverage that secondary states acquire when two superpowers compete for markets, resources, access, and diplomatic support. During the Cold War, Tito's Yugoslavia pursued considerable autonomy. Nasser's Egypt maneuvered between superpowers. Nehru's India led the Non-Aligned Movement. No one concluded from this that the Cold War system was multipolar. The same logic applies today. Strategic autonomy is not polarity. Diplomatic insubordination is not polarity. Regional influence is not polarity.
Russia presents the most serious counterargument. Russia possesses one of the world's two largest nuclear arsenals and formidable conventional military forces. On a definition of polarity that places the threshold on the ability to wage major conventional war and maintain a survivable nuclear deterrent, Russia qualifies. But comprehensive power measurement tells a different story. Russia does not approach the US or China in economic scale, manufacturing output, global trade, financial power, R&D expenditure, technological ecosystems, or maritime-industrial capacity. Its formidable nuclear and military capabilities sit atop a much narrower economic and technological resource base. Russia is a nuclear superpower. It is not a full-spectrum, full-stack superpower. Destructive capacity alone cannot define polarity; if it did, the distinction between a pole and other nuclear-armed states would become impossible to sustain.
The multipolarity concept has become difficult to dislodge partly because nearly everyone has an interest in believing in it. For Russia, multipolarity is the language of great power status. For India, it grants today some of the status its leaders expect to acquire in the future. For Europe, it allows avoidance of an uncomfortable reality: Europe has moved from the center of the international system to becoming a collection of wealthy but strategically weak powers. Middle powers prefer a world described as containing multiple centers of power rather than one structured around two superpowers. China itself has long promoted multipolarity even though China's own rise has been the principal force producing bipolarization. But international structure is not determined by diplomatic preference. It is determined by the distribution of capabilities.
Artificial intelligence may accelerate this process further. Frontier AI requires enormous capital investment, advanced semiconductors, computing infrastructure, data centers, energy, and sophisticated technological ecosystems. The US and China possess these complementary capabilities and are committing resources to AI on a scale that greatly separates them from the rest of the world. If AI becomes a significant source of economic productivity and military capability—the more plausible scenario—the gap separating the two poles from everyone else would widen further. If the most ambitious expectations prove correct, that gap could become enormous. AI is not the foundation of the bipolarity argument; it is a potential accelerator of a process already well under way. The irony is difficult to miss: multipolarity has become conventional wisdom at precisely the moment when the material distribution of comprehensive power is moving in the opposite direction.
Citazioni salienti
The end of unipolarity does not necessarily produce multipolarity. It can produce bipolarity.— The author's central thesis
China's convergence with the US ended unipolarity. China's divergence from the rest prevented multipolarity.— The author's explanation of the dual process
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