The DEFCON Warning System™

The World’s Only Public Nuclear Threat Advisory System. Independent, real-time analysis of global nuclear tensions. Since 1984.

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Alert Fatigue & The Russia/Ukraine War

With the recent rise in global tensions over Russia’s invasion of Ukraine, everyday people have been inundated with news, pictures, videos, and ...
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Russia

Putin’s Brutal War Shows the Dilemmas of Nuclear Deterrence

Even without having been used yet, nuclear weapons have shaped the war in Ukraine—and its outcomes will shape our views of nuclear ...
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Russia

US doesn’t ‘seem prepared’ for possibility that Putin uses nuclear weapons: expert

The United States’ reactionary moves to Russia’s invasion of Ukraine suggest that it does not have an adequate plan in place to ...
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World

The Perils of Emotional Arguments for Intervention in Ukraine

Ikrainian president Volodymyr Zelenskyy told a special session of the U.S. Congress on Wednesday that “Russia has turned the Ukrainian sky into ...
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Ongoing Geointel and Analysis in the theater of nuclear war.

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© 2026 The DEFCON Warning System. Established 1984.

The DEFCON Warning System is a private intelligence organization which has monitored and assessed nuclear threats by national entities since 1984. It is not affiliated with any government agency and does not represent the alert status of any military branch. The public should make their own evaluations and not rely on the DEFCON Warning System for any strategic planning. At all times, citizens are urged to learn what steps to take in the event of a nuclear attack.