Marie Yovanovitch, who gave evidence at the president's impeachment hearings, ends diplomatic work.

The messaging app will become obsolete on older operating systems from 1 Feb.

American Sofia Kenin wins a first Grand Slam title by beating Spain's Garbine Muguruza in three sets in the Australian Open final.

The Hollywood producer faces the threat of life in jail in a criminal trial taking place in New York.

Bid to call witnesses in the Trump impeachment trial fails, setting up a likely acquittal next week.

US citizens returning from Hubei province, where the coronavirus outbreak began, face quarantine.

Island Express Helicopters was restricted to flying in clear conditions, officials say.

Christopher Hasson, a former lieutenant, was arrested last year after stockpiling weapons.