SHAFAQNA – The Grand Ayatollah Makarem Shirazi answered questions regarding telling jokes about non-Muslim nations.
Question: What is the ruling about telling jokes about non-Muslim nations? What about Islamic nations?
The Grand Ayatollah Makarem: In both cases Islamic politeness must be observed, and there must not be any insult or disrespect; unless those who are engaged in wars with Muslims.
Source: PERSIAN SHAFAQNA