Mike Waltz Used Signal for More Sensitive National Security Chats:

 https://www.newsweek.com/mike-waltz-used-signal-more-sensitive-national-security-chats-report-2052875

 U. S. national security adviser Mike Waltz used the Signal messaging app to host other sensitive discussions with Cabinet members, The Wall Street Journal has reported, citing two unnamed officials.

Among those discussions were threads on brokering peace between Russia and Ukraine, and military operations, according to the Journal.