The Return of Jesus vs. the Return of the Shi'ite "Mahdi"

What many don't understand is that the radical Shi'ite Muslims in Iran are looking for the return of their "Messiah" to conquer Jerusalem and set up a one-world Islamic government and that these beliefs are behind what they have done and what they are doing and most importantly WHAT THEY WILL BE DOING in the future. We however know that it is the Lord Jesus Christ who will be returning to establish His eternal Kingdom. And it is this belief that should be fueling those of us who follow Christ!