I often visited Nizar Rayan, who was killed Thursday in a targeted assassination by Israel, at his house in the Jabaliya refugee camp when I was in Gaza. The house is now rubble. It was hit by two missiles fired by Israeli F-16 fighter jets. Rayan, who would meet me in his book-lined study, was decapitated in the blast. His body was thrown into the street by the explosions. His four wives and 11 children also were killed. Rayan supported tactics, including suicide bombings, which are morally repugnant. His hatred of Israel ran deep. His fundamentalist brand of Islam was distasteful.