“Israeli troops entered Gaza's biggest hospital on Wednesday and were searching its rooms and basement, witnesses said, culminating a days-long siege that caused global alarm over the fate of thousands of civilians trapped inside. Al Shifa hospital in Gaza City has become the main target of operations in a headquarters in tunnels beneath it, which Hamas denies. World attention has been focused on the fate of hundreds of patients trapped inside without power to operate basic medical equipment, and thousands of displaced civilians who had sought shelter there. Gaza officials say many patients including three newborn babies died in recent days as a result of Israel's encirclement of the facility. Israel said its troops killed fighters in a clash outside the gates before entering, and had brought medical supplies for those inside. "Before entering the hospital our forces were confronted by explosive devices and terrorist squads, fighting ensued in which terrorists were killed," the Israeli military said.”the ground operation by Israeli forces, who say Hamas fighters have the "beating heart" of their operations in a headquarters in tunnels beneath it, which Hamas denies.”