Plus: Israel\u2019s Benjamin Netanyahu calls a deadly strike on southern Gaza that killed dozens of people a \u201ctragic mistake\u201d and promises an investigation as condemnation mounts. And, Elon Musk\u2019s xAI becomes the second most valuable AI startup after OpenAI. Kate Bullivant hosts.\n\n\n\nSign up for the WSJ's free What's News newsletter.\xa0\n\n\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices