People throughout the Canadian province of Ontario awoke Sunday to a cellphone alert warning them of an “incident” at a nuclear plant just east of Toronto — only to later be told the message was a ...

From the Department of Homeland Security came notice in the United States of a "heightened threat environment." Hours later, the State Department blasted out a “worldwide caution security alert” ...

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 ...

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 ...

Editor's Note: This page is a summary of news on the U.S. strikes on Iran's nuclear sites for Sunday, June 22. For the latest news, view our story for Monday, June 23. The United States went on high ...

Editor's Note: This page is a summary of news on the U.S. strikes on Iran's nuclear sites for Sunday, June 22. For the latest news, view our story for Monday, June 23. Major U.S. cities from New York ...