Trump’s speech was a remarkable departure from decades of U.S. policy aimed at creating an integrated post-nationalist world under its own leadership. At the end of the Second World War, the U.S. emerged for the first time in its history as a true superpower: a country able to reach out beyond its borders and reshape the nature of global politics. Most people alive today were born into a world whose institutions, economic systems, legal rules, and political boundaries have all been shaped to some degree by American influence. While the U.S. has never been comfortable with embracing its identity — preferring to refer to itself with such euphemisms as “the indispensable nation” — a sober accounting of America’s influence on world affairs can only arrive at the designation of an “empire.”

Through a network of nearly 800 military bases located in 70 countries around the globe, in addition to an array of trade deals and alliances, the U.S. has cemented its influence for decades across both Europe and Asia. American leaders helped impose a set of rules and norms that promoted free trade, democratic governance — in theory, if not always in practice — and a prohibition on changing borders militarily, using a mixture of force and suasion to sustain the systems that keep its hegemony intact.

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