PARIS, France — This image by AFP photojournalist Omar al-Qattaa shows a skeletal, underfed girl in Gaza, where Israel's blockade has fuelled fears of mass famine in the Palestinian territory. But when social media users asked Grok where it came from, X boss Elon Musk's artificial intelligence chatbot was certain that the photograph was taken in Yemen nearly seven years ago. The AI bot's untrue response was widely shared online and a left-wing pro-Palestinian French lawmaker, Aymeric Caron, was accused of peddling disinformation on the Israel-Hamas war for posting the photo. At a time when internet users are turning to...