Defcon Nuclear Threat Level

Real-time OSINT tracking of the current DEFCON level, regional military alerts, nuclear risk indicators, and civilian preparedness across 14 combatant commands, 9 nuclear-armed states, and active conflicts worldwide. 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.

As of January 2023, the current DEFCON level is estimated to be at 3 due to the Russian conflict, according to OSINT (Open Source Intelligence) on the website DefconLevel.com. DEFCON stands for Defense Readiness Condition. It is the US militarys system for measuring readiness during potential threats, particularly major conflicts.

There are five levels, ranging from DEFCON 5 (normal peacetime readiness) to DEFCON 1 (imminent or ongoing nuclear war). The DEFCON system is a five-level alert scale the U.S. military uses to signal how ready its forces need to be for potential conflict, ranging from Level 5 (normal peacetime) to Level 1 (maximum war readiness).

The DEFCON level is controlled primarily by the U.S. president and the U.S. secretary of defense through the chairman of the Joint Chiefs of Staff and the combatant commanders; each level defines specific security, activation and response scenarios for the personnel in question.

Often referred to simply as the "ATA," the Annual Threat Assessment provides an unclassified summary the Intelligence Communitys evaluation of current threats to U.S. national security, including cyber and technological threats, terrorism, weapons of mass destruction, crime, environmental and natural resources issues, and economic issues. This guide will explain the DEFCON system and share all of the DEFCON levels, detailing what each level means and exploring historical moments when the alert status has been heightened.

The DEFCON system consists of five escalating levels of military readiness, with each level denoting a higher degree of preparedness. The DEFCON systems lowest threat level is DEFCON 5, while DEFCON 1 represents the highest threat level: readiness for war. The US has never reached DEFCON 1.

As of May 2026, the estimated DEFCON level is 3 and the nuclear risk level is 4. The official DEFCON level is classified; this page tracks an OSINT-based estimate.