Lawmakers, technology executives and researchers are advancing competing visions of artificial intelligence's risks and promise, as Congress grapples with how, and whether, to regulate it.

A Pentagon inspector general report gives Congress its most detailed accounting yet of the war with Iran, documenting costs in the tens of billions, strains on weapons stockpiles, and damage from Iranian strikes, as Republican opposition to the campaign grows.

The Federal Reserve raised its benchmark interest rate for the first time in three years to slow persistent inflation, and signaled that at least one more increase could follow before year's end.

The Trump administration announced visa restrictions on certain South African officials it accuses of involvement in policies that discriminate against the country's white minority. Pretoria rejected the basis for the measure.

A bus collision in the Chatsworth area of Los Angeles killed multiple people, and an NBC4 helicopter covering the scene from the air later crashed. A driver was arrested on a murder charge tied to the collision.