What is Signal, app used in Yemen war plans chat?

(The Hill) – Top Trump administration officials were revealed this week to have been using digital messaging app Signal to communicate sensitive details about an impending military strike against Houthi terrorists in Yemen earlier this month.

Jeffrey Goldberg, editor in chief of The Atlantic, reported Monday that he had been inadvertently included in a text chain through the encrypted messaging app where Vice President Vance, national security adviser Mike Waltz, Defense Secretary Pete...