The United States has been the world’s greatest power since 1945, when that mantle—half-passed from London to Washington after the First World War—firmly landed in American hands after the Second World War. Since 1991, when the Cold War ended with Soviet collapse, America has been the world’s hegemon, to use the proper term, the force whose power could not be seriously challenged on the global stage.
For 26 years now—a happy generation—America has been able to do whatever it wanted, to anyone, at any time of our choosing, anywhere on earth. Notwithstanding the decline of major sectors of the American economy, our military has covered the globe with deployments as the Pentagon has divided our planet into “geographic combatant commands” to formalize our hegemony. Our allegedly deep defense thinkers have hailed this as our viceroys enacting Washington’s benevolent imperial will anywhere we desire.
It needs to be said that plenty of the planet has been happy to acquiesce in American hegemony. While we’re hardly the pure-hearted hegemon we imagine ourselves to be, the United States appears like a relatively positive force on the global stage, compared to other options. Even among skeptics regarding America’s global dominance, few pine instead for hegemony under, say, Beijing and its Communist party bosses.
Nevertheless, 2017 gave unmistakable signs that American hegemony, which has been waning for a decade, has now ended. A new age has dawned, even though it’s still early and the sun is far from full. As commander-in-chief, in his first year in the Oval Office, President Donald Trump has ranted and raved on Twitter almost daily, with no effect save to confuse our allies about what exactly is going on in Washington. De facto, America has two foreign and defense policies: what the president says and what our national security bureaucracy does. The gap between presidential rhetoric, much of it unhinged, and actual policy toward the world grew throughout 2017.
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