Among the debates that have swept the U.S. foreign policy community since the beginning of the Trump administration, alarm about the fate of the liberal international rules-based order has emerged as one of the few fixed points. From the international relations scholar G. John Ikenberry’s claim that “for seven decades the world has been dominated by a western liberal order” to U.S. Vice President Joe Biden’s call in the final days of the Obama administration to “act urgently to defend the liberal international order,” this banner waves atop most discussions of the United States’ role in the world.
About this order, the reigning consensus makes three core claims. First, that the liberal order has been the principal cause of the so-called long peace among great powers for the past seven decades. Second, that constructing this order has been the main driver of U.S. engagement in the world over that period. And third, that U.S. President Donald Trump is the primary threat to the liberal order—and thus to world peace. The political scientist Joseph Nye, for example, has written, “The demonstrable success of the order in helping secure and stabilize the world over the past seven decades has led to a strong consensus that defending, deepening, and extending this system has been and continues to be the central task of U.S. foreign policy.” Nye has gone so far as to assert: “I am not worried by the rise of China. I am more worried by the rise of Trump.”
Although all these propositions contain some truth, each is more wrong than right. The “long peace” was the not the result of a liberal order but the byproduct of the dangerous balance of power between the Soviet Union and the United States during the four and a half decades of the Cold War and then of a brief period of U.S. dominance. U.S. engagement in the world has been driven not by the
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