People throughout the Canadian province of Ontario awoke to an emergency alert warning of an “incident” at a nuclear plant near Toronto, only to be told later that the message was a mistake. The ...

Reports and viral posts online claim that Iran’s new Supreme Leader Mojtaba Khamenei has cancelled all nuclear agreements and may adopt a hardline nuclear policy. The claims suggest Tehran could ...

Bus passengers in Moscow were ordered to take cover in bomb shelters over warnings of a ‘nuclear bombardment’ from Ukraine. A video filmed in Russia’s capital earlier today captured the moment an ...

Add Yahoo as a preferred source to see more of our stories on Google. From the Department of Homeland Security came notice in the United States of a "heightened threat environment." Hours later, the ...

Add Yahoo as a preferred source to see more of our stories on Google. The U.S. is on "high alert" for any retaliation from Tehran after the nation bombed three Iran nuclear sites, Chairman of the ...

LASK AIR BASE, Poland — NATO’s chief says the alliance sees no need to change its nuclear weapons alert level, despite Russia’s threats. NATO's secretary-general, Jens Stoltenberg, spoke to The ...

Throughout the Cold War, military planners on both sides of the Iron Curtain built weapons designed to deter the unthinkable. Yet several of those systems came dangerously close to coming active and ...

Iran's foreign minister warned of "everlasting consequences" and condemned the U.S. strikes as "outrageous," while some U.S. lawmakers criticized the action as illegal and grounds for impeachment. The ...