Nobody sent me a joke, but I found a cartoon and a funny line

The cartoon is from the official Palestinian Authority newspaper, Al-Hayat-Al-Jadeeda, and can be seen at LittleGreenFootballs, while the funny line is among DEBKA's headlines:

"As Palestinian authorities began detaining suspects in Gaza Strip, Arafat told BBC there was no indication that Palestinians were responsible for attack."

Put the two together and you'll see it's a joke.