Waltz inadvertently added The Atlantic's editor-in-chief to a group thread discussing sensitive national security matters.

More than a month after he drew criticism for using Signal to discuss an impending military attack, Waltz was seen using what ...

Mike Waltz, a former US congressman, is the first major official to leave the administration in Donald Trump's second term.

The ousted national security adviser will be nominated for U.N. ambassador, a less influential post, after his ...

National security adviser Michael Waltz is expected to depart his post, according to numerous media reports citing anonymous ...