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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Russia

Unpacking Medvedev’s Nuclear Threats

Dmitry Medvedev, currently holding the position of deputy chairman of the Security Council of Russia, has been making a lot of threats ...
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Announcements

DEFCON Warning System – Update 8-1-23

This is the DEFCON Warning System. Alert status for 9 P.M. UTC, Tuesday, August 1st, 2023.  Condition code is Green.  DEFCON 5. ...
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World

Risk Analysis Methods for Nuclear War and Nuclear Terrorism (2023)

Pre-Publication copy. Subject to revision. The assessment of risk is complex and often controversial. It is derived from the existence of ahazard, ...
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NATO

Sweden’s NATO Accession Limits Putin’s Options

After months of diplomatic delays, Sweden can now join NATO—a genuine triumph for the Biden administration. This development has enormous geostrategic implications ...
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Lighthope's Beacon

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Ongoing Geointel and Analysis in the theater of nuclear war.

Opportunity

© 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.