Nawaz Sharif, a three-time prime minister, made a noisy return to Pakistan on Saturday after years of self-imposed exile, seizing an opening in the country’s turbulent politics and economic disarray to attempt another dramatic comeback.
In late 2019, an ailing Mr. Sharif left Pakistan for London in an air ambulance after being granted bail from a seven-year prison sentence. While he is Pakistan’s longest-serving prime minister, Mr. Sharif has never finished any of his terms in office, running afoul of the country’s powerful military or, in the latest case, being toppled by corruption…