הרב יוסף שלום אלישיב

Yosef Shalom Elyashiv was a Haredi rabbi and posek who lived in Jerusalem. Until his death at the age of 102, Rav Elyashiv was the paramount leader of both Israel and the Diaspora Lithuanian-Haredi community, and many Ashkenazi Jews regarded him as the posek ha-dor, the contemporary leading authority on halakha, or Jewish law.