In 2012, three men on a late-night walk in Toronto discussed plans to conduct a major terrorist attack. Two of the men were al Qaeda-linked radicals. The third was an undercover FBI agent, secretly ...

In a contentious hearing on Capitol Hill, the nation's top intelligence officials testified that they did not share classified information in a messaging group chat that discussed the U.S. bombing ...

SEE ALSO: The Trump administration accidentally texted military plans to a journalist. The White House says it's fine. As such, one might expect that the U.S. government would like to keep such ...

The phrase “fog of war” generally refers to confusion on the battlefield, not to a fight over communications about military action. But now, following the recent attack on Yemen by the U.S., a shroud ...

CBS News has learned Israeli officials are furious over the leak of a Signal group chat discussing military strikes on Houthi targets in Yemen. CBS News national security contributor Sam Vinograd has ...

Democrat Sen. Mark Kelly of Arizona calls for Secretary of Defense Pete Hegseth to resign after war plans were shared on the messaging app, Signal. "Our service members and our national security ...

Were federal laws were violated? Was classified information exposed on the commercial messaging app? Will anyone face consequences for the leaks? President Donald Trump gestures after speaking at a ...

The Trump administration’s Signal chat leak represents the "profound" risk of "uncontrolled communication," which could have implications on future operations, a former national intelligence official ...

James LaPorta is a national security coordinating producer in CBS News' Washington bureau. He is a former U.S. Marine infantryman and veteran of the Afghanistan war. Washington — Israeli officials are ...

Democrats on a House committee appeared in lock step as they confronted one of the most notable blunders of the Trump administration. By Julian E. Barnes and Robert Jimison Reporting from Washington ...