Israeli forces withdrew from one of northern Gaza’s last functioning medical facilities, leaving a trail of destruction after a dayslong siege and overnight airstrikes that killed dozens in the city of Beit Lahia.

Troops stormed the hospital last week as the Israel Defense Forces continued their deadly offensive in the north, labeled one of the conflict’s “darkest moments” by the United Nations’ human rights chief, Volker Türk.

The IDF said it was targeting Hamas militants who…