Israeli officials are angry over a Signal chat leak that exposed sensitive intelligence Israel shared with the US from a human source in Yemen. The leak compromised a human intelligence source and angered Israeli officials who had provided the information to the US for targeting. The chat, set up by President Trump's national security adviser, was mistakenly made public, compromising the information. US intelligence officials testified that no classified information was shared in the chat, but experts say that even unclassified information should not be shared through unsecured methods like the Signal app.