On July 25, Hamas' Al-Aqsa TV in Gaza aired a sermon from a Deir Al-Balah mosque in which an unnamed imam declared: "Our doctrine in fighting you (the Jews) is that we will totally exterminate you. We will not leave a single one of you alive, because you are alien usurpers of the land." (MEMRI)
http://www.memritv.org/clip/en/4376.htm