Donald Trump gives a national security speech aboard the World War II Battleship USS Iowa, September 15, 2015, in San Pedro, California. (ROBYN BECK/AFP via Getty Images)

More than 10 years ago, the columnist Charles Krauthammer asserted that American “decline is a choice,” and argued tendentiously that Barack Obama had chosen it. Yet looking back over the last decade, it has become increasingly obvious that this decline has occurred irrespective of what political leaders in Washington want.

The truth is that decline was never a choice, but the U.S. can decide how it can respond to it. We can continue chasing after the vanished, empty glory of the “unipolar moment” with bromides of American exceptionalism. We can continue to delude ourselves into thinking that military might can make up for all our other weaknesses. Or we can choose to adapt to a changed world by prudently husbanding our resources and putting them to uses more productive than policing the world.

There was a brief period during the 1990s and early 2000s when the U.S. could claim to be the world’s hegemonic power. America had no near-peer rivals; it was at the height of its influence across most of the globe. That status, however, was always a transitory one, and was lost quickly thanks to self-inflicted wounds in Iraq and the natural growth of other powers that began to compete for influence. While America remains the most powerful state in the world, it no longer dominates as it did 20 years ago. And there can be no recapturing what was lost.

Alexander Cooley and Dan Nexon explore these matters in their new book, Exit From Hegemony: The Unraveling of the American Global Order. They make a strong case for distinguishing between the old hegemonic order and the larger international order of which it is a part. As they put it, “global international order is not synonymous with American hegemony.” They also make careful distinctions between the different components of what is often simply called the “liberal international order”: political liberalism, economic liberalism, and liberal intergovernmentalism. The first involves the protection of rights, the second open economic exchange, and the third the form of international order that recognizes legally equal sovereign states. Cooley and Nexon note that both critics and defenders of the “liberal international order” tend to assume that all three come as a “package deal,” but point out that these parts do not necessarily reinforce each other and do not have to coexist.

While the authors are quite critical of Trump’s foreign policy, they don’t pin the decline of the old order solely on him. They argue that hegemonic unraveling takes place when the hegemon loses its monopoly over patronage and “more states can compete when it comes to providing economic, security, diplomatic, and other goods.” The U.S. has been losing ground for the better part of the last 20 years, much of it unavoidable as other states grew wealthier and sought to wield greater influence. The authors make a persuasive case that the “exit” from hegemony is already taking place and has been for some time.

Many defenders of U.S. hegemony insist that the “liberal international order” depends on it. That has never made much sense. For one, the continued maintenance of American hegemony frequently conflicts with the rules of international order. The hegemon reserves the right to interfere anywhere it wants, and tramples on the sovereignty and legal rights of other states as it sees fit. In practice, the U.S. has frequently acted as more of a rogue in its efforts to “enforce” order than many of the states it likes to condemn. The most vocal defenders of U.S. hegemony are unsurprisingly some of the biggest opponents of international law—at least when it gets in their way. Cooley and Nexon make a very important observation related to this in their discussion of the role of revisionist powers in the world today:

But the key point is that we need to be extremely careful that we don’t conflate “revisionism” with opposition to the United States. The desire to undermine hegemony and replace it with a multipolar system entails revisionism with respect to the distribution of power, but it may or may not be revisionist with respect to various elements of international architecture or infrastructure.

The core of the book is a survey of three different sources for the unraveling of U.S. hegemony: major powers, weaker states, and transnational “counter-order” movements. Cooley and Nexon trace how Russia and China have become increasingly effective at wielding influence over many smaller states through patronage and the creation of parallel institutions and projects such as the Collective Security Treaty Organization (CSTO), the Shanghai Cooperation Organization (SCO), and the Belt and Road Initiative (BRI). They discuss a number of weaker states that have begun hedging their bets by seeking patronage from these major powers as well as the U.S. Where once America had a “near monopoly” on such patronage, this has ceased to be the case. They also track the role of “counter-order” movements, especially nationalist and populist groups, in bringing pressure to bear on their national governments and cooperating across borders to challenge international institutions. Finally, they spell out how the U.S. itself has contributed to the erosion of its own position through reckless policies dating back at least to the invasion of Iraq.

The conventional response to the unraveling of America’s hegemony here at home has been either a retreat into nostalgia with simplistic paeans to the wonders of the “liberal international order” that ignore the failures of that earlier era or an intensified commitment to hard-power dominance in the form of ever-increasing military budgets (or some combination of the two). Cooley and Nexon contend that the Trump administration has opted for the second of these responses. Citing the president’s emphasis on maintaining military dominance and his support for exorbitant military spending, they say “it suggests an approach to hegemony more dependent upon military instruments, and thus on the ability (and willingness) of the United States to continue extremely high defense spending. It depends on the wager that the United States both can and should substitute raw military power for its hegemonic infrastructure.” That not only points to what Barry Posen has called “illiberal hegemony,” but also leads to a foreign policy that is even more militarized and unchecked by international law.

Cooley and Nexon make a compelling observation about how Trump’s demand for more allied military spending differs from normal calls for burden-sharing. Normally, burden-sharing advocates call on allies to spend more so the U.S. can spend less. But that isn’t Trump’s position at all. His administration pressures allied governments to increase their spending, while showing no desire to curtail the Pentagon budget:

Retrenchment entails some combination of shedding international security commitments and shifting defense burdens onto allies and partners. This allows the retrenching power, in principle, to redirect military spending toward domestic priorities, particularly those critical to long-term productivity and economic growth. In the current American context, this means making long-overdue investments in transportation infrastructure, increasing educational spending to develop human capital, and ramping up support for research and development. This rationale makes substantially less sense if retrenchment policies do not produce reductions in defense spending–which is why Trump’s aggressive, public, and coercive push for burden sharing seems odd. Recall that Trump and his supporters want, and have already implemented, increases in the military budget. There is no indication that the Trump administration would change defense spending if, for example, Germany or South Korea increased their own military spending or more heavily subsidized American bases.

The coronavirus pandemic has exposed how misguided our priorities as a nation have been. There is now a chance to change course, but that will require our leaders to shift their thinking. U.S. hegemony is already on its way out; now Americans need to decide what our role in the world will look like afterwards. Warmed-over platitudes about “leadership” won’t suffice and throwing more money at the Pentagon is a dead end. The way forward is a strategy of retrenchment, restraint, and renewal.