From Ngaire Woods, at Foreign Affairs, "Order Without America":
In a remarkably short time, the second Trump administration has upended many of the precepts that have guided international order since the end of World War II. President Donald Trump has rapidly redefined the U.S. role in NATO while questioning U.S. defense guarantees to Europe and Japan and even intelligence sharing with its Five Eyes partners: Australia, Canada, New Zealand, and the United Kingdom. At the United Nations, the United States has sided with Russia and other erstwhile adversaries, such as Belarus and North Korea, and against nearly all its traditional democratic allies. European officials, scrambling to react, have begun wondering whether they need to develop their own nuclear deterrents and whether Washington will continue to maintain U.S. troops on the continent. Yet just as important as these security considerations is the administration’s rejection of the treaties, organizations, and economic institutions that the United States has done so much to shape. On the first day of his second term, Trump issued executive orders to withdraw from the UN Paris climate accord and the World Health Organization and imposed a 90-day pause on all delivery of U.S. foreign aid. In early February, he ordered a sweeping 180-day review of all international organizations to which the United States belongs and “all conventions and treaties to which the United States is a party.” And more aggressive moves may be coming: Project 2025, the Heritage Foundation’s blueprint for the second Trump administration, which has anticipated many Trump policies, calls for a U.S. exit from the International Monetary Fund (IMF) and the World Bank, cornerstones of global development and economic stability that the United States has for decades guided with a firm hand. From all this it may be easy to conclude that the postwar order is falling apart. By renouncing U.S. leadership, the Trump administration appears to be marking the end of American primacy and benevolent hegemony. As the historian Robert Kagan and others have argued, in the absence of the American superpower, a chaotic jungle may emerge. Of course, it is possible that the Trump administration could use raw power to undermine global stability and enable the United States, China, Russia, and others to carve out their own spheres of influence. In such a world, wars might be more frequent, and previous close allies of the United States, whether in Europe or Asia, could be vulnerable to outright coercion. Yet it is not preordained that this kind of breakdown will occur. The old order may well be disappearing, but whether that leads to chaos and conflict also depends on the many other countries that have until now upheld the institutions on which it has rested. There are many ways that interstate cooperation can continue to be effective without U.S. leadership and even act as a restraining force on unilateral moves by Washington. But for that to happen, core members of the postwar order, including European countries, Japan, and other partners in Asia and elsewhere, must preemptively join together to reinforce cooperation with one another. They cannot afford to wait and see, with the risk that some might peel away. The Trump administration is moving fast to reset what the United States wants and bypassing long-established multilateral arrangements to get it. Other countries must move just as fast to protect and build on those structures, which they will need now more than ever. SUPPLY AND DEMAND In standard accounts of international relations, order requires a powerful hegemon that is prepared to use its dominant military and economic power to uphold the rules, norms, and institutions that govern interactions among states. This understanding—known as hegemonic stability theory—is often invoked to explain the breakdown of order in Europe in the 1920s and 1930s, when no country was both willing and able to underwrite cooperation: the United Kingdom was willing and the United States was able, but neither was both. By contrast, after World War II, the United States, driven by the global threat of communism, had both the will and the capacity to enforce order. Applied to today’s world, the theory suggests that a U.S. withdrawal from the international treaties and organizations it helped create would cause a collapse of order. As the political scientist Robert Keohane pointed out in the 1980s, however, hegemonic stability theory looks only at the “supply side”: the willingness of a powerful country to supply the conditions for cooperation. But the demand side matters, too. Many countries, including the vast majority that lack dominant power, support various forms of multilateral cooperation to secure their own interests. That demand exists because in a world rife with competition, uncertainty, and conflicts, most countries recognize that ad hoc deal-by-deal diplomacy is unlikely to succeed. Such deals will tend to favor strong powers and thus lead to the kind of coercive behavior Trump has already used against weaker countries such as Canada and Mexico. As a result, even in the absence of a hegemon, countries may seek collective institutions to pool their power, build a bulwark against instability, and capture the mutual gains that occur when a modicum of cooperation is achieved. This insight suggests new possibilities for order without the United States. In fact, multilateralism without a hegemon has a long history in Europe. At the Congress of Vienna in 1814–15, the European powers convened to create a rudimentary order. What emerged was the Concert of Europe, a group that would come to include Austria, France, Prussia, Russia, and the United Kingdom. Although the United Kingdom had great naval and economic strength at the time, it did not have hegemonic power over the continent. Rather, a combination of diplomatic cooperation and a balance of power kept order until the Crimean War and the unifications of Germany and Italy disrupted it. A yet older example of such cooperation is the Hanseatic League, the confederation established by northern European cities in the thirteenth century to protect and promote their trading interests. Highly successful, it flourished for hundreds of years...
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