Israel’s prime minister Benjamin Netanyahu has said that there is “no absolute certainty” that the second-in-command of Hamas, Mohamed Deif, was killed in an air strike in southern Gaza on Saturday. Israel said it had targeted Hamas’ shadowy military commander in the massive strike on Al-Mawasi, an area the Israeli military had declared a safe zone. Local health officials said at least 90 people, including children, were killed. “Mohamed Deif is a master of murders, the Hamas chief of staff, number two in the chain of command. And was the planner and leader of the 7 October massacre and of man…