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When the leaders of more than 100 nations gathered in Glasgow for the UN climate conference last week, there was much discussion about the disastrous effect of climate change on the global environment. There was, however, little awareness of its likely political impact on the current world order that made such an international gathering possible.
World orders are deeply rooted global systems that structure relations among nations and the conditions of life for their peoples. For the past 600 years, as I’ve argued in my new book To Govern the Globe, it’s taken catastrophic events like war or plague to overturn such entrenched ways of life. But within a decade, climate change will already be wreaking a kind of cumulative devastation likely to surpass previous catastrophes, creating the perfect conditions for the eclipse of Washington’s liberal world order and the rise of Beijing’s decidedly illiberal one. In this sweeping imperial transition, global warming will undoubtedly be the catalyst for a witch’s brew of change guaranteed to erode both America’s world system and its once unchallenged hegemony (along with the military force that’s been behind it all these years).
By charting the course of climate change, it’s possible to draw a political road map for the rest of this tempestuous century—from the end of American global hegemony around 2030, through Beijing’s brief role as world leader (until perhaps 2050), all the way to this century’s closing decades of unparalleled environmental crisis. Those decades, in turn, may yet produce a new kind of world order focused, however late, on mitigating a global disaster of almost unimaginable power.
The Bipartisan Nature of US Decline
America’s decline started at home as a distinctly bipartisan affair. After all, Washington wasted two decades in an extravagant fashion fighting costly conflicts in distant lands, in part to secure the Middle East’s oil at a time when that fuel was already destined to join cordwood and coal in the dustbin of history (though not faintly soon enough). Beijing, in contrast, used those same years to build industries that would make it the world’s workshop.
In 2001, in a major miscalculation, Washington admitted Beijing to the World Trade Organization, bizarrely confident that a compliant China would somehow join the world economy without challenging American global power. “Across the ideological spectrum, we in the US foreign policy community,” wrote two former members of the Obama administration, “shared the underlying belief that US power and hegemony could readily mold China to the United States’ liking… All sides of the policy debate erred.”
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A bit more bluntly, foreign policy expert John Mearsheimer recently concluded that “both Democratic and Republican administrations… promoted investment in China and welcomed the country into the global trading system, thinking it would become a peace-loving democracy and a responsible stakeholder in a US-led international order.”
In the 15 years since then, Beijing’s exports to the United States grew nearly fivefold to $462 billion annually. By 2014, its foreign currency reserves had surged from just $200 billion to an unprecedented $4 trillion—a vast hoard of cash it used to build a modern military and win allies across Eurasia and Africa. Meanwhile, Washington was wasting more than $8 trillion on profitless wars in the Greater Middle East and Africa in lieu of spending such funds domestically on infrastructure, innovation, or education—a time-tested formula for imperial decline.
When a Pentagon team assessing the war in Afghanistan interviewed Jeffrey Eggers, a former White House staffer and Navy SEAL veteran, he asked rhetorically: “What did we get for this $1 trillion effort? Was it worth a trillion? After the killing of Osama bin Laden, I said that Osama was probably laughing in his watery grave considering how much we have spent on Afghanistan.” (And keep in mind that the best estimate now is that the true cost to America of that lost war alone was $2.3 trillion.) Consider it an imperial lesson of the first order that the most extravagantly funded military on Earth has not won a war since the start of the 21t century.
Donald Trump’s presidency brought a growing realization, at home and abroad, that Washington’s world leadership was ending far sooner than anyone had imagined. For four years, Trump attacked long-standing US alliances, while making an obvious effort to dismiss or demolish the international organizations that had been the hallmark of Washington’s world system. To top that off, he denounced a fair American election as “fraudulent” and sparked a mob attack on the US Capitol, functionally making a mockery of America’s long history of promoting the idea of democracy to legitimate its global leadership (even as it overthrew unfriendly democratic governments in distant lands via covert interventions).
In that riot’s aftermath, most of the Republican Party has embraced Trump’s demagoguery about electoral fraud as an article of faith. As it happens, no nation can exercise global leadership if one of its ruling parties descends into persistent irrationality, something Britain’s Conservative Party demonstrated all too clearly during that country’s imperial decline in the 1950s.
After his inauguration last January, Joe Biden proclaimed that “America is back” and promised to revive its version of liberal international leadership. Mindful of Trump’s battering of NATO (and that he, or someone like him, could take the White House in 2024), European leaders, however, continued to make plans for their own common defense without the United States. “We aren’t in the old status quo,” commented one French diplomat, “where we can pretend that the Donald Trump presidency never existed and the world was the same as four years ago.” Add in Biden’s humiliating retreat from Afghanistan as Taliban guerrillas, wearing tennis sneakers and equipped with aging Soviet rifles, crushed an Afghan military armed with billions of dollars in US gear, entering Kabul without a fight. After that dismal defeat, it was clear America’s decline had become a bipartisan affair.
Global leadership lost is not readily recovered, particularly when a rival power is prepared to fill the void. As Washington’s strategic position weakens, China has been pressing to dominate Eurasia, home to 70 percent of the world’s population and productivity, and so build a new Beijing-centric global order. Should China’s relentless advance continue, there will be serious consequences for the world as we know it.
Of course, the current order is, to say the least, imperfect. While using its unprecedented power to promote a liberal international system based on human rights and inviolable sovereignty, Washington simultaneously violated those same principles all too often in pursuit of its national self-interest—a disconcerting duality between power and principle that has afflicted every global order since the 16th century.
As the first hegemon that didn’t participate in any way in the fitful, painful process of forging just such a liberal world order through six centuries of slavery, slaughter, and colonial conquest, China’s rise could ultimately threaten the current system’s better half—its core principles of universal human rights and secure state sovereignty.
The Coming of Climate Change
Beyond Washington’s strategic failings, there was another far more fundamental force already at work eroding its global power. After seven decades of the profligate kind of fossil-fuel consumption that became synonymous with the US world system, climate change is now profoundly disrupting the whole human community.
As of 2019, following years of bipartisan evasions and compromises (along with partisan Republican denials of the very reality of climate change), the United States still relied on fossil fuels for 80 percent of its total energy; renewables, only 20 percent. The situation was even worse in China, which depended on fossil fuels for 86 percent of its power and renewable sources for only about 14 percent. As energy expert Vaclav Smil explained, the underlying global problem was 150 years of embedded inertia that made the “production, delivery, and consumption of fossil fuels…the world’s most extensive, and the most expensive, web of energy-intensive infrastructures.”
If there is ever to be a true transition beyond fossil fuels, the world’s two largest economies will have to play a determinative role in it. In the meantime, the picture is anything but cheery. Global carbon dioxide emissions rose by a staggering 50 percent from 22.2 gigatons in 1997 to a peak of 33.3 gigatons in 2019 and, despite a brief drop at the height of the Covid-19 pandemic, are still rising. Significantly, China accounted for 30 percent of the world’s total in that year, and the United States nearly 14 percent—for a combined 44 percent share of all global greenhouse gasses.
At the 2019 Madrid climate conference, UN Secretary-General António Guterres warned that, if current emissions continue, global warming will reach as high as 3.9° Celsius by century’s end, with “catastrophic” consequences for all life on the planet. And at Glasgow two weeks ago, he renewed this warning, saying: “We are digging our own graves.… Sea-level rise is double the rate it was 30 years ago. Oceans are hotter than ever—and getting warmer faster. Parts of the Amazon rainforest now emit more carbon than they absorb.… We are still careening towards climate catastrophe.”
In the 600 years since the age of exploration first brought the continents into close contact, 90 empires have come and gone. But there have been just three new world orders, each of which survived until it suffered some version of cataclysmic mass death. After the bubonic plague, also known as the Black Death, wiped out an estimated 60 percent of medieval Europe’s population, the Portuguese and then Spanish empires expanded to form the first of those world orders, which continued for three centuries until 1805.
The devastation of the Napoleonic wars then launched the succeeding British imperial system, which survived a full century until 1914. Similarly, Washington’s hegemony, along with its current world order, arose from the devastating destruction of World War II. Now, climate change is unleashing cataclysmic environmental changes that could soon enough overshadow such past catastrophes, while damaging or destroying the global order that has pervaded the planet for the past 70 years.
As wildfires worsen, ocean storms intensify, megadroughts spread, flooding increases drastically, and the seas rise precipitously, many millions of the world’s poor will be uprooted from their precarious perches along seashores, flood plains, and desert fringes. Recall for a moment that the arrival between 2016 and 2018 of just two million refugees at the borders of the United States and the European Union unleashed a surge of populist demagoguery, which led to Britain’s Brexit, Europe’s increasing ultranationalism, and Donald Trump’s election. Now, try to imagine what kind of a world of political upheaval lies in a future in which climate change generates anywhere from 200 million to 1.2 billion refugees by mid-century.
As at least a million refugees start to crowd America’s southern border every year, while storms, fires, and floods batter coasts and countryside, the United States is almost certain to retreat from the world to cope with growing domestic crises. Include in that the inability of its two political parties to agree on just about anything (other than spending yet more money on the Pentagon). Similar and simultaneous pressures worldwide will certainly cripple the international cooperation that has long been at the core of Washington’s world order.
China’s Short Reign as Global Hegemon
So, when might shifting geopolitics and climate cataclysm converge to fully cripple Washington’s current world order? Beijing plans to complete the technological transformation of its own economy and much of its massive trans-Eurasian infrastructure, the Belt and Road Project, by 2027. That projected date complements a prediction by the US National Intelligence Council that “China alone will probably have the largest economy, surpassing that of the United States a few years before 2030.”
By then, according to projections from the accounting firm PwC, China’s gross domestic product will have grown to $38 trillion—more than 50 percent larger than a projected $24 trillion for the American one. Similarly, China’s military, already the world’s second largest, should by then be dominant in Asia. Already, as The New York Times reported in 2019, “in 18 of the last 18 Pentagon war games involving China in the Taiwan Strait, the U.S. lost.” As China pushes its maritime frontier farther into the Pacific, Washington may well be faced with a difficult choice—either abandon its old ally Taiwan or fight a war it could well lose.
Weighing Beijing’s global future, it seems safe to assume that, minimally, China will gain enough strength to weaken Washington’s global grip and is likely to become the preeminent world power around 2030. Count on one thing, though: The accelerating pace of climate change will almost certainly curtail China’s hegemony within two or three decades.
As early as 2017, scientists at the nonprofit Climate Central reported that, by 2060 or 2070, rising seas and storm surges could flood areas inhabited by 275 million people worldwide and, suggests corroborating research, Shanghai is “the most vulnerable major city in the world to serious flooding.” According to that group’s scientists, 17.5 million people are likely to be displaced there as most of the city “could eventually be submerged in water, including much of the downtown area.”
Advancing the date of this disaster by at least a decade, a report in the journal Nature Communications found that 150 million people worldwide are now living on land that will be below the high-tide line by 2050 and that rising waters will “threaten to consume the heart” of Shanghai by then, crippling one of China’s main economic engines. Dredged from sea and swamp in the 15th century, much of that city is likely to return to the waters from whence it came, possibly as early as three decades from now.
Meanwhile, increasing temperatures are expected to devastate the North China Plain, a prime agricultural region between Beijing and Shanghai currently inhabited by 400 million people. “This spot is going to be the hottest spot for deadly heat waves in the future,” according to Professor Elfatih Eltahir, a specialist on hydrology and climate at MIT. Between 2070 and 2100, he estimates, the region could face hundreds of periods of “extreme danger” when a combination of heat and humidity will reach a “wet bulb temperature” (WBT) of 31° Celsius, and perhaps five lethal periods of 35° WBT—where a combination of heat and high humidity prevents the evaporation of the very sweat that cools the human body. After just six hours living in such a wet bulb temperature of 35° Celsius, a healthy person at rest will die.
If the “Chinese century” does indeed start around 2030, barring remarkable advances in the reduction of the use of fossil fuels on this planet, it’s likely to end sometime around 2050 when its main financial center is flooded out and its agricultural heartland begins to swelter in insufferable heat.
A New World Order?
Given that Washington’s world system and Beijing’s emerging alternative show every sign of failing to limit carbon emissions in significant enough ways, by mid-century the international community will likely need a new form of global governance to contain the damage.
After 2050, the world community will quite possibly face a growing contradiction, even a head-on collision, between the foundational principles of the current global order: national sovereignty and human rights. As long as nations have the sovereign right to seal their borders, the world will have no way of protecting the human rights of the hundreds of millions of future climate-change refugees.
By then, facing a spectacle of mass global suffering now almost unimaginable, the community of nations might well agree on the need for a new form of global governance. Such a supranational body or bodies would need sovereign authority over three critical areas—emissions controls, refugee resettlement, and environmental reconstruction. If the transition to renewable energy sources is still not complete by 2050, then this international body might well compel nations to curb emissions and adopt renewable energy. Whether under the auspices of the UN or a successor organization, a high commissioner for global refugees would need the authority to supersede state sovereignty in order to require nations to help resettle such tidal flows of humanity. The future equivalents of the International Monetary Fund and World Bank could transfer resources from wealthy temperate countries to feed tropical communities decimated by climate change.
Massive programs like these would change the very idea of what constitutes a world order from the diffuse, almost amorphous ethos of the past six centuries into a concrete form of global governance. At present, no one can predict whether such reforms will come soon enough to slow climate change or arrive too late to do anything but manage the escalating damage of uncontrollable feedback loops.
One thing is becoming quite clear, however. The environmental destruction in our future will be so profound that anything less than the emergence of a new form of global governance—one capable of protecting the planet and the human rights of all its inhabitants—will mean that wars over water, land, and people are likely to erupt across the planet amid climate chaos. Absent some truly fundamental change in our global governance and in energy use, by mid-century humanity will begin to face disasters of an almost unimaginable kind that will make imperial orders of any sort something for the history books.
