British Prime Minister Keir Starmer’s position is under serious threat after dozens of his own lawmakers called for him to set out a timetable for his departure, or resign, in the wake of heavy losses in local elections. Here’s what could happen next: Has a leadership contest been triggered? Not yet. On Monday, several ministerial aides stepped down and more than 70 Labour lawmakers publicly called for Starmer’s departure after his appeal for another chance seemingly fell on deaf ears. Some...