"I have never seen a breach quite like this". That was the damning assessment of Jeffrey Goldberg, editor-in-chief of The Atlantic, after he was accidentally added to a group chat on Signal where top US defence and intelligence officials were discussing confidential war plans to strike Houthi rebels in Yemen.
This major security "botch" will only further stoke concerns that have "repeatedly been raised about intelligence sharing with the US" under Donald Trump's administration, said Sam Blewett at Politico.