 German Dreven is an expert on Islamist militancy at the International Crisis Group. He says that if one of the targets, the senior leader Mohamed Deif, was killed, it's unlikely to have any real impact. Israel has tried to kill him for at least over two decades. At the same time, it doesn't mean that it would end the war, because Hamas still exists, Hamas is still on the ground, and so Hamas does not depend on the survival of its military leader to continue the fight.