If you have cash and time to spare, it could eventually be a worthy investment. Given the volatile situation there now, I wouldn't expect a return for at least 5-7 years. And at 5-7 years, your return will be minimal. Also keep in mind you'd want to monitor the events over there closely. With the resentment towards the U.S., it is not inconcievable for a new regime to wipe the slate clean of the Dinar. In that case, your investment is moot.

EDIT: Potential foriegn currency investments that might pan out soon and at a greater yield...Central African Nations. European development is strong, there is a renewed focus in the UN and charitable agencies for increased development, and slowly, the political picture is starting to take shape...not stabilizing, but starting to take a definitive shape.