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

Andrew Harnik / Getty Images Last week, Trump's National Security Advisor Mike Waltz went viral ... exploitable information" sent to his personal Gmail account, such as his "schedule" and "other ...

National Security Advisor Mike Waltz and his deputy Alex Wong are resigning from the White House amid the "Signalgate" ...

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

Mike Waltz, the US National Security Advisor, is again facing criticism -- this time for using Google's email service Gmail. According to a report in Washington Post, Waltz used Gmail for official ...