A barrage of Israeli airstrikes leveled apartment buildings in a refugee camp near Gaza City on Tuesday, and footage showed rescuers pulling men, women and children out of the rubble. Israel said the strike destroyed a Hamas command center set up in civilian houses and a network of tunnels underneath. The toll from the strikes in the Jabaliya camp was not immediately known. The Israeli military said a large number of militants were killed, including the commander overseeing Hamas operations in northern Gaza.