....when they happen upon a magic lamp! Excited, they rub the lamp and a Genie appears. "Thank you for releasing me! In exchange, I will grant you each one wish".
The Iranian thinks for a minute, and says: "My people get pushed around by the rest of the world, but we would be fine if we had 1,000 tanks". The Genie says "Granted".
The Israeli thinks for a minute and says: "My country is in danger now because of these tanks, I wish for a wall around Israel that will keep out these tanks and protect us". The Genie says "Granted".
The Nazi thinks for a minute, and says: "Tell me about this wall". The Genie replies: "Well, it is 1,000 meters tall, 100 meters thick, and made of solid steel. The only way in our out is by helicopter or plane". The Nazi thinks for a bit, asks: "Nothing can get in or out?". "Correct" says the Genie. The Nazi says: "Fill it with water".
This joke was developed by a multicultural team of various faiths and beliefs.