WASHINGTON — The revelation that President Donald Trump’s most senior national security officials posted the specifics of a military attack to a chat group that included a journalist hours ...

A special bulletin from the National Security Agency warned of a security vulnerability in the same Signal messaging app that was used by the Defense Secretary Pete Hegseth and more than 15 other ...

The Atlantic on Wednesday released excerpts of a conversation among top national security leaders to which ... sought to distinguish “war plans” from “attack plans,” a nod to The Atlantic ...