Mosab Hassan Yousef, the son of a Hamas leader, explains why Hamas is responsible for the war: when they launched their murderous attack on Israel on October 7th, they knew that Israel would retaliate, knew that Gazan civilians would die and are happy about it because it meant they would be dragging Israel into a dirty war where Israel would be stained because they would be blamed for spilling childrens' blood. Hamas started the war and are therefore wholly responsible. People die in war but had Israel not been so careful, the casualties on the Gazan side would be much higher.