The DEFCON Warning System™

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

DEFCON 4 - Blue

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All
  • All
  • Announcements
  • China
  • Korea
  • Middle East
  • NATO
  • Nuclear
  • Off Topic
  • Russia
  • United States
  • World
Middle East

Nuclear Iran NOT an “Acceptable Risk”

The Center for a New American Security (CNAS), comprising largely former, mostly Democrat administration foreign policy and defense officials, in a new ...
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World

Can a Nuclear War Be Won? America’s Adversaries May Think So

n 2021, U.S. president Joe Biden and Russian president Vladimir Putin said that nuclear war should never be fought and, if fought, ...
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Russia

Can Russia and the West Survive a Nuclear Crisis in Ukraine?

The Russo-Ukrainian War may soon produce a major U.S.-Russian nuclear crisis. Despite President Joe Biden’s occasional cautionary remarks that he understands the ...
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Announcements

DEFCON Warning System – Update 5/16/22

This is the DEFCON Warning System. Alert status for 9 P.M. UTC, Monday, May 16th, 2022. Condition code is Blue. DEFCON 4. ...
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© 2025 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.