Truss takes office in time-honored British fashion. The transfer of power from the outgoing prime minister, Boris Johnson, was accomplished in a pair of meetings with the queen.

Truss, who was announced as the leader of the ruling Conservative Party on Monday, is the 15th prime minister of Queen Elizabeth II's reign.

The queen will meet the new prime minister at Balmoral Castle in Scotland. The meeting, usually performed at Buckingham Palace, was moved as the 96-year-old monarch faces health challenges.

Liz Truss took office as British prime minister Tuesday when she followed outgoing leader Boris Johnson in meeting Queen Elizabeth II for a ceremonial of power.

Just a week after Queen Elizabeth asked Liz Truss to form a government, Britain's new prime minister is attending services of reflection across the country with King Charles, determined to strike ...

Truss, who was announced as the leader of the ruling Conservative Party on Monday, is now the 15th prime minister of Queen Elizabeth II’s reign.