LONDON — British Prime Minister Liz Truss has fired her finance minister, Kwasi Kwarteng, as she fights to hang on as prime minister after her budget crashed the markets. Truss will give a press conference later Friday, amid reports of another imminent U-turn on significant parts of her plan to cut taxes. Downing Street announced Jeremy Hunt, who has previously served as health secretary and foreign secretary, would replace Kwarteng as chancellor. Despite several attempts to calm the markets, including reversing a plan to cut tax for the highest earners and bringing forward a more detailed budget statement, Truss has...