Elon Musk is racing to perfect an AI model, just as teams of his young associates are gaining access to some of the nation’s most sensitive and closely guarded databases through the Department of Government Efficiency. That has sparked worries among Democrats and even some Republicans that Musk could use those records to supercharge his AI.

The Israeli military said on Friday that one of the bodies released by Hamas did not belong to any of the hostages held in Gaza, accusing Hamas of violating an already shaking ceasefire.