U.S. President Donald Trump's national security adviser says he's taking "full responsibility" for an "embarrassing" situation created when a prominent magazine journalist was added to a group chat in which pending strike plans against Houthi targets were being discussed by senior U.S. officials.
NPR's Ailsa Chang speaks to Sen. Mark Warner of Virginia about questioning top Intelligence officials today on Capitol Hill about war plans being leaked in a group chat with a journalist.
