Attendees of the U.S.-Saudi Investment Forum included scores of the world’s most powerful CEOs, among them Elon Musk, Jensen Huang and Larry Fink.

Traditionally, even debates as high-profile as these have been blighted by a low turnout as lawmakers pop into the main plenary room to say their piece at their allotted time and then skedaddle. In ...

The plenary room of the Ritz Carlton Riyadh was packed to the brim on Tuesday as guests awaited the arrival of U.S. President Donald Trump and Saudi Crown Prince Mohammed bin Salman. The event's ...