Hal Brands, Columnist

Welcome to the New Era of Nuclear Brinkmanship

The main effect of the most destructive weapons the world has ever known is now mostly psychological. 

A strategic nuclear missile parades through Moscow, June 2020.

Photographer: Andrey Rudakov/Bloomberg

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The Ukraine war is the first great-power nuclear crisis of the 21st century — and it won’t be the last. Since February 2022, Russian President Vladimir Putin has rattled his nuclear saber in hopes of isolating Ukraine and intimidating it into submission. The US has responded by threatening Putin with terrible reprisals if he uses nuclear weapons, and by cooperating with Western allies to sustain Ukraine despite Moscow’s threats. The nuclear risk-taking is both a throwback to Cold War-era superpower crises and a preview of what lies ahead.

America is immersed in sharp security competitions with Russia and China. For both countries, nuclear weapons are central to their programs for regional expansion and their preparations for a potential showdown with the US. As Washington and its rivals joust for influence around the Eurasian periphery, they will come face-to-face in crises where nuclear weapons cast ominous shadows. To safely navigate the next great-power nuclear crisis, America will need to learn the lessons of this one.