US President Donald Trump has come to the defense of national security advisor Michael Waltz following a Signal group chat leak that revealed planned military strikes on Houthi rebels. The leak occurred when a staffer inadvertently added journalist Jeffrey Goldberg to the chat, sparking security apprehensions. Trump has rebuffed demands for an apology and instead instructed Waltz to probe Signal’s susceptibilities, underscoring the importance of secure communication platforms. The incident has raised concerns about the security of digital communication tools used by government officials.