Former national security adviser Mike Waltz defended his use of the messaging app Signal during a confirmation hearing ...

Former National Security Advisor Mike Waltz faced scrutiny over a Signal chat incident during his U.N. ambassador hearing ...

Months after the chat was disclosed, questions remain over the controversy, including if federal laws were violated and if ...

The Kremlin said U.S. President Donald Trump signaled to Ukraine that it should continue the war after he said he would send ...