Balmoral Castle

Queen Elizabeth II has been placed under medical supervision because doctors are "concerned for Her Majesty's health," Buckingham Palace said Thursday, as members of the royal family traveled to Scotland to be with the 96-year-old monarch.

Liz Truss became Britain's next prime minister on Tuesday after meeting with Queen Elizabeth II, who asked her to form a new government as the country faces an acute cost-of-living crisis.

Truss, 47, took office in the carefully choreographed ceremony with the monarch a day after the ruling Conservative Party announced that Truss was elected as its leader.