The DEFCON Warning System™

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

United States

A new report on the nation’s nuclear defense posture focuses on how to strengthen America and her allies, a top Pentagon official

Hawaii is not prepared to respond in the event a nuclear ballistic missile attack. That’s according to a comprehensive state report that looked

Weather junkie John Grosso knew it was highly unlikely a monster wave was barreling toward the Connecticut coast. Still, when a tsunami

Minutes after the people of Hawaii received an emergency alert on their phones last week, they began calling loved ones to issue

While there’s no question that a nuclear strike on the Continental US would be utterly devastating, it’s not the only way

For the first time in more than three decades, an ominous warning siren blared across Hawaii earlier this month — an alarm

The United States, Japan, and South Korea will reportedly continue their preparations for nuclear war starting Monday with two days of missile

On Monday, NBC Nightly News broadcast a report claiming that White House officials had discussed using an experimental weapon to disrupt or

The Heritage Foundation’s documentary “33 Minutes” may not be the most cheerful holiday season film, but its warning to the American public

It was a once-in-a-decade display of American firepower. Three US Navy aircraft carriers — the largest, most sophisticated warships in history —

It wouldn’t happen overnight. But it could happen. A new report to the US Congress warns one or two nuclear weapons detonated

A State Department report shows the United States is in compliance with the New START treaty with Russia that limits nuclear warheads