Biden Administration Adopts Rules to Guide A.I.’s Global Spread

New rules aim to keep advanced technology out of China and to ensure that cutting-edge artificial intelligence is developed by the United States and its allies.

Biden Officials Say the Truth About Havana Syndrome Is Still Unknown

The White House contradicts a new intelligence assessment on the mysterious ailments that diplomats and spies have reported for years.

4 Takeaways From the Arguments Before the Supreme Court in the TikTok Case

The justices, who asked tough questions of both sides, showed skepticism toward arguments by lawyers for TikTok and its users.

House Passes Bill to Sanction I.C.C. Officials for Israeli Prosecutions

The action put the measure on track for likely enactment given strong support for it among Republicans, who now control the Senate, and President-elect Donald J. Trump.