More than 100 lawmakers loyal to Pakistan's ousted prime minister Imran Khan resigned yesterday, creating a headache for the new, Western-friendly incumbent Shehbaz Sharif as he tries to drag his country out of a political and economic crisis.

Parliament's election of Sharif, 70, as prime minister yesterday followed a week-long constitutional crisis that reached a climax on Sunday (April 10) when Khan lost a no-confidence vote in Parliament.

His departure from power...