The Postwar Order Unwinding
The institutions, alliances, and norms built after 1945 are not holding the way they used to. A structural look at what is fraying, why, what is replacing it, and what is at stake.
(1945 to today; older than most of its current critics and most of its current defenders)
(US, China, EU, India, and a flexible Russia-plus group)
(NATO, WTO, IMF voting weights, the dollar system, key UN bodies)
A note on framing. "The postwar order" is a phrase that carries different things for different readers. It can mean specific institutions (UN, NATO, World Bank, IMF, WTO), a set of norms (democratic governance, open trade, freedom of navigation), or a power arrangement (American leadership of a Western bloc). All three are real and all three are changing. The page below tries to walk through what is genuinely shifting, what is more durable than the headlines suggest, and what is genuinely open about what comes next. This page is the synthesis piece for The Now and references the other pages by name where they go deeper on specific threads.
What "the postwar order" actually was
The system built after the Second World War was a deliberate response to the failures of the period between the two wars. Its architects wanted institutions that could prevent the next major war, prevent the next great depression, and bind countries to each other tightly enough that pulling apart was costly. The result was the most ambitious construction of international institutions in human history, all built within a few years and around the United States as the dominant builder.
The economic side started at Bretton Woods in 1944: the International Monetary Fund (the IMF, set up to provide emergency lending to countries in monetary crisis), the World Bank (development lending), and a system of fixed exchange rates anchored to a US dollar that was itself anchored to gold. The trade side was added through the General Agreement on Tariffs and Trade (the GATT) in 1947 and later the World Trade Organization (the WTO) in 1995.
The political side started with the United Nations in 1945. The Security Council with its five permanent members (the US, the UK, France, the Soviet Union, and Republic of China, later replaced by the People's Republic) was meant to keep the great powers talking. The General Assembly was meant to give every member a voice. The various UN agencies (the World Health Organization, UNICEF, the UN High Commissioner for Refugees, and many others) tried to handle specific problems globally.
The security side started with bilateral and multilateral defence treaties, especially NATO (1949), the US-Japan treaty (1951), and the network of US security commitments that came to cover Australia, South Korea, the Philippines, Taiwan informally, and a long list of other partners. The arrangement underwrote European reconstruction, contained the Soviet Union, and provided most of the security architecture of East Asia for decades.
Underneath the formal institutions sat a set of informal norms: the dollar as the world's main reserve currency, freedom of navigation in international waters under US Navy guarantee, open markets among allied countries, and the assumption that the United States would be the central convener of the system whenever it needed convening. The whole thing was built around an asymmetry: the United States provided most of the security and most of the institutional leadership; allied countries got prosperity, predictability, and protection in exchange for accepting US-led rules.
That arrangement is what people now call "the postwar order" or sometimes "the rules-based international order" or "the liberal international order." It was real, it was built by specific people for specific reasons, and most of it is still in place. The question that has emerged over the last decade is whether it will keep working as well as it used to, and what is replacing the parts that have started to fail.
What is actually fraying
Several of the load-bearing pieces of the postwar order have visibly weakened in the last fifteen years. None has fully broken; several are working much less well than they used to. The list below is not exhaustive but covers the most consequential threads.
The dollar's monopoly on international payments has begun to erode. The dollar is still by far the dominant reserve currency, but its share of central bank reserves has fallen from about 71% in 2000 to about 58% today. The active use of dollar-system access as a sanctions weapon has accelerated quiet diversification by countries worried about being on the receiving end. The Dollar piece on this site goes deeper on what this means.
The single-power dominance of the United States has ended in measurable terms. China's economy passed the United States on a purchasing-power-parity basis around 2017 (the IMF and World Bank figure, which adjusts for the fact that the same amount of money buys more in China than in the US); measured in current dollars at market exchange rates, the US economy is still substantially larger, and which measure is the right one for which question is itself contested. China overtook the United States in manufacturing output by physical volume around 2010. The American military still spends roughly three times what China officially reports - though Chinese defence accounting omits items Western budgets include, so the real ratio is closer than headline numbers suggest. The gap is narrowing and the strategic geography of the Western Pacific has shifted in ways the China piece describes. Single-power dominance is not coming back without a major Chinese stumble that there is no clear basis to expect.
The WTO has been quietly hollowed out. The Appellate Body, which arbitrated trade disputes among members, was effectively shut down by the United States blocking new appointments after 2017. New trade agreements increasingly happen bilaterally or among small groups (the Comprehensive and Progressive Agreement for Trans-Pacific Partnership, the Regional Comprehensive Economic Partnership in Asia, the EU's web of bilateral deals) rather than through the multilateral system. The WTO still exists; it does not do what it used to.
NATO has both expanded and become more contested. NATO membership has grown to 32 countries, including Sweden and Finland after the Russian invasion of Ukraine. American leadership of the alliance has become more conditional, with serious questions raised in successive US administrations about how reliable the security commitment is for partners who do not pay enough. Europeans are scrambling to build their own defence capability not because they want to leave NATO but because they no longer fully trust that NATO will be there in a crisis.
The UN Security Council has become structurally non-functional on most major issues. Russia's invasion of Ukraine in 2022 (a member of the Security Council vetoing any meaningful response to its own aggression) crystallised what had been quietly true for years: the Security Council can act only when none of the major powers cares enough to veto, which limits it on exactly the issues that matter most. UN agencies still do useful work; the headline body increasingly does not.
Trust in international institutions has fallen alongside trust in domestic ones. The Edelman Trust Barometer and similar surveys show declining confidence in international institutions across most countries. The Trust piece goes deeper on the broader pattern. Lower trust makes coordinated action through any institution harder.
Open trade has become contested even in the countries that built the system. US trade policy under both major political parties has shifted toward more aggressive tariffs, export controls, and "domestic content" requirements. The European Union has launched its own industrial policy. China has long had its own version. The post-1990s consensus that open trade was simply better for everyone has fragmented in ways that are unlikely to fully reverse.
What is more durable than the headlines suggest
Counter-balancing the fraying, several pieces of the postwar order are more durable than the loudest political voices acknowledge. A reader who only consumes "decline of the West" coverage gets a partial picture.
The dollar is still the centre of the global monetary system. The slow erosion of its reserve share has not been matched by the rise of any single rival. The euro has structural limits. The yuan is constrained by Chinese capital controls. Gold and digital alternatives remain marginal. The dollar still mediates roughly 88% of all international currency-market trades on at least one side. This is closer to "first among many" than to "displaced."
NATO is larger than it has ever been and is currently spending more. European defence spending has roughly doubled since 2014. Several countries that historically resisted NATO membership (Sweden, Finland) have joined. The alliance has been actively engaged in supporting Ukraine in ways most observers in 2010 would have considered impossible. American security commitments to Europe and East Asia, despite all the political turbulence, remain in place.
The major Western alliance system has held through serious tests. The 2022 Russian invasion of Ukraine produced the most coordinated Western response since the end of the Cold War - sanctions, military aid, refugee absorption, and energy decoupling, all delivered with unusual speed across the US, EU, UK, Canada, Japan, Korea, and Australia. The system that was supposed to be hollowed out turned out to be more resilient than its critics expected.
The international development and health institutions still do useful work. The World Bank still finances infrastructure across the developing world. The IMF still steps in during emergencies. The World Health Organization, despite real failures, still coordinates global health responses. Multilateral aid agencies still deliver vaccines, food, and emergency relief at scale. The headline institutions have problems; the operational layer underneath them functions better than is often portrayed.
Globalisation has slowed but has not reversed. Trade as a share of the global economy peaked around 2008 and has been roughly flat since, but it has not collapsed. Foreign direct investment continues. International supply chains have been partially reshored or "friendshored" but most of them still operate. The fragmentation is real and is reshaping who trades with whom; the underlying interconnection is largely intact.
The honest summary: the postwar order is bending rather than breaking. The visible erosion is real. The deep infrastructure (treaties, institutions, network effects of the dollar, alliance commitments, supply chains) is more durable than either dramatic decline narratives or confident continuity narratives suggest.
How the institutional health actually compares
Different parts of the order are in different conditions. The table below gives a rough qualitative picture of what is working, what is wobbling, and what is largely broken.
The takeaway: the order is not one thing. Some parts are stronger than ever; some are working badly; some are not working at all. The reform agenda is different for each piece. Critics who treat all of it as failing are as wrong as defenders who treat all of it as fine.
What is replacing it
Inside and around the cracks of the postwar order, new arrangements have been quietly forming. Some are deliberate alternatives; some are just the practical results of countries adapting to a more multipolar reality. None has the scale or coherence to replace the old order outright; together they describe what the next system will probably look like.
Smaller, more flexible coalitions. The defining feature of the new arrangement is that countries cooperate in shifting groupings depending on the issue, rather than through one umbrella alliance. The Indo-Pacific Economic Framework, AUKUS (Australia-UK-US), the Quad (US-Japan-India-Australia), the I2U2 (India-Israel-UAE-US), the EU-Mercosur deal, and a long list of others are coalitions of the willing rather than expansions of single institutions. The architecture is more like a web than a hierarchy.
Parallel financial infrastructure. China's Cross-Border Interbank Payment System (CIPS), Russia's SPFS, India's UPI extending across borders, central-bank digital currencies, and dollar-denominated stablecoins together form a nascent alternative to the SWIFT-and-correspondent-bank system that has run cross-border payments for decades. None replaces the old system today; together they reduce the leverage of any single point of control.
Industrial policy as the new common ground. The US CHIPS and Inflation Reduction Acts, the EU's Net-Zero Industry Act and Critical Raw Materials Act, China's Made in China 2025, India's Production-Linked Incentive scheme, and similar programs in Japan, Korea, the UK, and elsewhere all share a common feature: governments actively shaping where particular industries get built rather than letting private markets decide alone. This is a reversal of the post-1990s consensus and is producing a different global pattern of investment than the 2000s did.
Regional spheres of influence reasserting themselves. The Gulf states are an increasingly autonomous economic and political bloc. India is building deeper ties across South Asia and the Indian Ocean. Russia is rebuilding influence in Central Asia and parts of Africa, often through private military companies. China is deepening its role in Southeast Asia, parts of Africa, and Central Asia through Belt and Road and bilateral deals. These regional patterns coexist with the global institutions; they do not replace them but they constrain them.
Non-state actors with state-scale weight. Major technology companies (the US frontier AI labs covered in the AI piece, Chinese platforms, ASML in lithography, TSMC in chip manufacturing covered in the Taiwan piece) now hold strategic positions that previously belonged only to states. Sovereign wealth funds (Norway's, Saudi Arabia's, Singapore's) move money at scales that affect international markets. Private military companies blur the line between state and private security. The actors that matter in international politics have expanded beyond the traditional list.
The view from outside the West
The postwar order as it has actually been experienced varies dramatically depending on where the reader sits. A US or UK reader is most likely to think of the order as something built by their country, broadly working in their country's interests, and now being challenged by external rivals. That framing is mostly accurate from inside the Western core. It is much less accurate from outside it.
From an Indian, Brazilian, South African, Indonesian, or Egyptian perspective, the postwar order has often been Western rules applied selectively, with permanent advantages locked in for the powers that wrote those rules in 1945. The five permanent Security Council seats are still held by the World War II winners. The IMF leadership is European by tradition. The World Bank leadership is American by tradition. The "rules-based international order" that the West appeals to has, from this perspective, been routinely bent or ignored when it cuts against Western interests (the 2003 Iraq war is often cited; so is selective sanctions enforcement; so is the slow pace of climate finance commitments).
That perspective is partly true and partly self-serving (every country thinks the system is biased against it). The serious version of it is that the postwar order has worked better for some countries than others, and the countries it has worked less well for are increasingly numerous, large, and capable. They are not seeking to overthrow the order so much as to modify it - more representation, less Western leverage, more flexibility on which rules apply when. The countries the West sometimes calls "the Global South" are mostly not anti-Western; they are not pro-American the way Cold War allies were either. They are looking out for themselves in a more multipolar world. Pretending this is not real, or that it is the result of Russian or Chinese disinformation rather than the underlying reality, makes Western policy less effective.
The paths from here
The next twenty years are unusually open. Several of the trajectories are extensions of trends already underway; several depend on choices that have not been made yet, on either the Western side or the rising-powers side.
A managed multipolar order
The major powers (US, China, EU, India, Russia, plus key middle powers) reach a working accommodation. Some institutions are reformed (UN Security Council expansion, IMF voting weights, WTO appellate body). Some are accepted as serving particular interests rather than as universal. New institutions emerge for specific issues (climate, AI safety, digital governance). The system is more contested than the unipolar moment but also more resilient because no single power can break it alone.
Will it happen? Possible but requires sustained statesmanship that has been in short supply. The closer we get to 2030, the more visibly the system needs reform; whether the reform is delivered through agreement or only after a crisis is the open question.
Two competing blocs harden
The world organises into a US-led Western bloc and a China-led non-Western bloc, with the major middle powers (India, Brazil, Indonesia, the Gulf states) having to choose sides or carve out a third position. Trade, technology, finance, and security increasingly run on parallel tracks that overlap less each year. Reminiscent of Cold War 1.0 but with more economic interdependence and different ideological battle lines.
Will it happen? Partly already happening. Whether it deepens into full blocs depends substantially on how the US-China relationship handles its critical pressure points, especially Taiwan. Most middle powers are working hard to avoid having to choose, and would join the bloc system reluctantly if at all.
A genuine multi-aligned middle
The "non-aligned" group of the Cold War is reborn at a much larger scale. India, Brazil, Indonesia, Saudi Arabia, the UAE, Turkey, South Africa, Mexico, and a long list of others maintain working relationships with both Washington and Beijing without joining either bloc. International institutions adapt to this multi-aligned middle being the deciding bloc on most votes.
Will it happen? Largely already happening. The voting patterns at the United Nations on most major issues now show this multi-alignment clearly. The middle powers are themselves more confident and more capable than they were in the 1960s, and treat their non-alignment as a positive strategy rather than as a default.
The current order partially restored under American leadership
A future US administration aggressively rebuilds American institutional leadership: re-engages with multilateral institutions, restores trust with allies, pushes through specific reforms (UN Security Council expansion, WTO Appellate Body restoration), invests in soft power, and uses the resulting trust to shape the rules of the next phase rather than fighting against them. The system is reformed rather than replaced.
Will it happen? Possible but increasingly difficult. Trust takes years to rebuild and minutes to lose. The window for a clean American restoration is narrowing as other powers build alternatives. Some version of this is being attempted in each new American administration; whether sustained over decades is the question.
A serious crisis forces a new institutional moment
A major war, financial collapse, climate disaster, or pandemic - or some combination - forces a new "Bretton Woods moment." The major powers, faced with the cost of failure, agree to coordinated reform that none of them was willing to deliver in calmer times. Bretton Woods itself happened because of a world war; whether something less catastrophic can produce similar coordination is uncertain.
Will it happen? The probability of some major crisis in the next twenty years is high. Whether the response is constructive coordination or further fragmentation depends on the leadership available when the moment comes. Both responses are well-precedented; neither is guaranteed.
A drifting fragmentation
No major confrontation, no decisive crisis, no clean reform. The institutions keep going through the motions while delivering less. Countries increasingly free-ride or work around the formal system. Bilateral and small-group deals replace multilateral ones. The world becomes less coordinated, more transactional, and less able to handle global problems that need large-scale coordination (climate, pandemics, AI safety, financial stability).
Will it happen? This is in many ways the path of least resistance and is consistent with the actual pace of change over the last decade. The cost of drift is paid in slow erosion of the capacity for coordinated action when it is most needed. It is hard to see in any given year and very visible across decades.
A new architecture built around new problems
Rather than reforming the 1945-vintage institutions, the world builds new ones around the actual problems of the 21st century: climate, AI governance, pandemic preparedness, cybersecurity, biotechnology safety. The old institutions handle their original missions (or fail to); new institutions handle the new ones. The system becomes layered rather than hierarchical.
Will it happen? Partly already happening. The Paris Agreement on climate, the various AI governance forums, the Pandemic Treaty currently being negotiated under the WHO, and various cybersecurity coordination groups all represent attempts at this. Whether they are strong enough to be effective is the harder question.
The realistic forecast is, again, a mix. Some version of managed multipolarity is the base case. Hardening blocs is the most visible alternative if the US-China relationship deteriorates. The multi-aligned middle is large enough to shape outcomes whichever way the major powers move. A drifting fragmentation is the path of least resistance and is its own form of failure even when it does not look like one. The serious work of statecraft over the next two decades is choosing among these paths rather than letting drift decide.
Where serious analysts disagree
The postwar order is one of the topics where serious people who agree about most of the facts reach different conclusions about what to do. Each reading below is held by named scholars whose work is worth engaging directly.
The order is being reformed, not replaced
The visible erosion is real but the underlying structure is bending under pressure rather than breaking. Most international institutions still work most of the time. Most alliances still hold. The reform agenda is concrete: expanded representation, modernised voting weights, new mandates for new issues. The work is hard but is the work, and doing it well is what determines whether the next two decades are constructive or fractious.
Held by: Anne-Marie Slaughter (former US State Department), G. John Ikenberry (Princeton), and a substantial fraction of the working international-relations community. Their position is partly substantive and partly defensive of the institutions they have spent careers studying; the underlying observation that most of the system still functions is well-supported.
A new multipolar order is emerging whether the West likes it or not
The economic and demographic trends underneath the visible institutions point clearly toward a world where no single power has the relative weight the United States had after 1945. Western strategy that assumes American primacy as a recoverable default is making itself increasingly out of touch with actual relative weights. The honest position is to plan for a world in which the United States is the largest single power but is not the indispensable one.
Held by: Hugh White (ANU), Amitav Acharya (American University), and a body of work on the multiplex world order. The data on relative national capabilities supports them; the implication for Western strategy is uncomfortable in Washington but is increasingly mainstream in capitals outside it.
The order's damage is mostly self-inflicted
The biggest threat to the postwar order has not been Chinese rise or Russian aggression - it has been Western, especially American, policy choices. The 2003 Iraq war damaged Western credibility on rules-based behaviour. The active use of dollar sanctions damaged trust in the dollar system. The ageing-out of multilateralism in successive American administrations damaged the institutional muscle the order depends on. Repair starts with American restraint and consistent commitment, not with confronting external rivals.
Held by: Adam Tooze (Columbia), Stephen Walt (Harvard), and a school of realist and historically-minded analysts. Their argument is uncomfortable in Washington but matches a substantial body of evidence about which choices have actually mattered.
The institutions still serve American interests well and should be defended
Despite the rhetoric of decline, the United States remains the largest economy, the strongest military, the centre of finance, the home of frontier technology, and the convener of the most important alliance system on Earth. The institutions of the postwar order continue to amplify American power and interests in ways that few rivals can match. Defending and selectively reforming the system is more useful than retreating from it.
Held by: G. John Ikenberry, Robert Kagan, and the broader "liberal internationalist" tradition of US foreign-policy thinking. The data on American structural advantages supports them; the open question is whether American politics will sustain the engagement the position requires.
What replaces the order depends on choices we have not yet made
The interesting question is not whether the postwar order survives in its current form (it almost certainly will not) but what the next version looks like. That depends on choices the major powers and the multi-aligned middle make over the next decade about specific institutions, specific norms, and specific commitments. The space of possible futures is wide enough that careful thinking and committed effort can meaningfully shift the outcome.
Held by: Fareed Zakaria, Angela Stent, and a tradition of pragmatic foreign-policy analysis that emphasises agency over inevitability. The position is partly normative; the underlying observation that the future is more open than declinist or restorationist narratives suggest is well-supported.
None of these readings is fully right or wrong. What can be said from the available evidence: the postwar order is bending in real and serious ways; the bending is partly a structural consequence of relative power shifts and partly a result of choices made by all major actors; the institutions retain real value and partly real legitimacy; new arrangements are emerging in the gaps; what the system looks like in 2040 depends substantially on choices being made now in Washington, Beijing, Brussels, Delhi, Brasilia, and a dozen other capitals. Treating the current moment as a fixed end-state in either direction is the most reliable way to be wrong.
What this means for you
Whether the postwar order is unwinding or reforming touches every reader through the value of currencies, the security of supply chains, the structure of careers, the prices of imported goods, and the politics of the country one lives in. A few practical observations:
If you are a citizen of a Western country
The institutions your country built and led are real, valuable, and harder to rebuild than to maintain. Voting on the merits of specific policies (alliance commitments, multilateral engagement, trade rules, climate finance) rather than on slogans about decline or restoration is more useful than the political conversation typically suggests. The cost of disengagement is paid over decades; the gain from engagement is rarely as visible as a single dramatic confrontation.
If you are a citizen of a non-Western country
The current period is unusually rich in options. Most non-Western governments have more meaningful choices on infrastructure, finance, security partnerships, and education partnerships than they did even fifteen years ago. The smarter governments use this leverage to negotiate better terms with each major power. Engaging seriously with how your country navigates this multi-aligned moment is one of the more consequential parts of citizenship over the next decade.
If you do business internationally
Plan for more friction, more political risk, more compliance complexity, and more sudden rule changes than you would have expected ten years ago. Companies that have built robust supply chains, multi-jurisdiction legal capacity, and political-risk awareness are positioned for the new environment. Companies that assumed the post-1990s consensus would continue indefinitely are increasingly being surprised by it. The structural shift is as important for business strategy as any individual market or product decision.
If you invest
The single safest assumption in a more multipolar world is that asset diversification across regions, currencies, and political jurisdictions matters more than it did under American single-power dominance. The home-country bias that worked when home was always the safest harbour works less well when no single harbour is unconditionally safe. None of this is investment advice; it is observing what kind of asset structure the underlying world is moving toward.
If you are thinking about the long arc
Major institutional transitions in human history have tended to be slower than the dramatic narratives suggest and to produce more continuity than the revolutionary or declinist frames imply. The postwar order is not collapsing this year and is unlikely to be replaced by 2030. The deeper trajectory does, however, unfold. The most useful posture is to take the long view, take specific institutions seriously rather than only treating them symbolically, and treat the next twenty years as a period during which choices are made rather than as a script that has already been written. The other pieces on this site - on US debt, demographics, energy, China, the dollar, Taiwan, India, Europe, Africa, wealth and inequality, the family, AI, trust, religion, climate, and identity - all describe specific threads of the larger picture this synthesis tries to draw together. None of them is fully separable from the others; together they describe the structural moment most of the readers of this site are living through.
The mechanics behind this
The postwar-order story sits on top of three deeper mechanisms covered elsewhere on this site. If the analysis above depends on ideas you want to understand first, these fundamentals make the conversation more legible:
