Washington | US Defence Secretary Pete Hegseth disclosed war plans in an encrypted group chat that included a journalist two hours before US troops launched attacks against the Houthi militia in Yemen, the White House said on Monday (Tuesday AEDT), confirming an account in the magazine The Atlantic.

Editor-in-chief Jeffrey Goldberg wrote that he was mistakenly added to the text chat on the commercial messaging app Signal by Michael Waltz, the national security adviser.