The device burned an exterior gate of the house in San Francisco, the police said, and it was unclear whether the artificial intelligence executive was home. The authorities arrested a suspect.

Emerging from weeks of U.S. and Israeli airstrikes, an emboldened Iran has 10 demands for talks during the tenuous cease-fire, according to Iranian state media. Our reporter Erika Solomon assesses Iran’s position.

An interagency dispute over the use of high-energy lasers near airports led the Federal Aviation Administration to temporarily close the airspace twice in Texas this year.