What led to Starmer's resignation as U.K. prime minister and who will likely replace him

Keir Starmer has stepped down as U.K. prime minister just two years after guiding the Labour Party to an election win, setting the stage for a leadership contest. Andy Burnham is now the top contender to take over, with his experience and political acumen making him a strong candidate. The sudden resignation comes amid internal party pressures and a need for fresh leadership to regain public confidence and tackle ongoing national challenges. This shift could significantly impact the party's future direction and electoral prospects.