President Trump is privately venting his frustration about National Security Advisor Mike Waltz, according to two Republican sources with knowledge of the conversations. The New York Times is reporting that U.S. military pilots are also frustrated with the Signal group chat snafu. NBC News' Melanie Zanona reports more. New York Times Pentagon correspondent Helene Cooper and former NATO Supreme Allied Commander retired Gen. Wesley Clark join José Díaz-Balart to discuss. For more context and news