May, Theresa M

Ms. Truss, who prevailed over Rishi Sunak, will be greeted by an array of vexing problems, including double-digit inflation, a looming recession, labor unrest and soaring household energy bills. LONDON — A divided British Conservative Party announced on Monday that it had chosen Liz Truss to replace Prime Minister Boris Johnson, turning to a party stalwart, hawkish diplomat and free-market champion to lead a country facing the gravest economic crisis in a generation.Ms. Truss, 47, defeated Rishi Sunak, a former chancellor of the Exchequer, whose resignation in July set in motion Mr. Johnson’s ouster. Her victory was widely expected, but the margin was less resounding than the polls forecast, suggesting she may face problems pulling together a party shaken by Mr. Johnson’s turbulent three-year tenure and a country rattled by an energy crisis and the aftershocks of Brexit.Ms. Truss, who served as foreign secretary in Mr. Johnson’s cabinet and was not part of the Tory rebellion that led to his departure, will formally assume the prime minister’s title on Tuesday in a meeting with Queen Elizabeth II at Balmoral Castle in Scotland, where the queen spends her summer holiday. Ms. Truss will be Britain’s fourth prime minister in the six years since it voted to leave the European Union, and only its third female leader, after Margaret Thatcher and Theresa May. Like them, she will be greeted by a forbidding array of problems.Double-digit inflation, a looming recession, labor unrest, soaring household energy bills and possible fuel shortages this winter — all will confront Ms. Truss as she moves into 10 Downing Street. She also faces a potential collision with the European Union over her legislation to change trade rules in Northern Ireland, a dispute that could spill over into Britain’s relations with the United States, which opposes any kind of disruptive change.In a brief, businesslike speech to members of her party after her victory was confirmed, Ms. Truss promised a “bold plan” to lower taxes and revive the economy. “I campaigned as a Conservative, and I will govern as a Conservative,” she declared. “We will deliver, we will deliver and we will deliver.”Ms. Truss after her victory was confirmed.Adrian Dennis/Agence France-Presse — Getty ImagesCritics said Ms. Truss’s call for tax cuts and smaller government was inadequate in the face of the dire economic threats bearing down on Britain. Many expect her to pivot quickly and announce a massive aid program, as soon as this week, to shield vulnerable households from skyrocketing gas and electric bills, a collateral effect of Russia’s cutoff of energy supplies to continental Europe.“The wonderland nature of the campaign has not prepared people for what’s to come,” said Gavin Barwell, who served as chief of staff to Mrs. May. “If you look at the overall environment, you’ve got quite a difficult set of issues, and the party is in a worse state than when May came in.”On the global stage, Ms. Truss is likely to intensify Britain’s support for Ukraine and its president, Volodymyr Zelensky. As foreign secretary, she staked out a tough position on Russia, declaring that “Putin must lose” his war on Ukraine.The Fall of Boris Johnson, ExplainedCard 1 of 5The Fall of Boris Johnson, ExplainedTurmoil at Downing Street. More