The British prime minister, Liz Truss, fired her friend, Kwasi Kwarteng, from his post as the chancellor of the exchequer after her plans for unfunded tax cuts roiled the economy, caused government borrowing costs to increase, and sent the value of the pound plummeting; following a statement from Kwarteng’s replacement, Truss failed to appear in a session of Parliament that included a question about Kwarteng’s dismissal.