What does that mean? What would a "Berlin Wall 1989 moment" in the Middle East resemble? Who would win? Who would fall? What leads you to this conclusion?
The Cold war era ended in 1990, and a new generational era began. The different regions of the earth are being liberated step by step. It’s Arabia’s turn. Saddam’s power grab in Aug of 1990 was the beginning; (about)19 years later it comes the end.
At a micro level, there is great friction and turmoil beneath the surface. Saudi Arabia doesn’t reflexively side against the Jews anymore, as was evidenced with the criticism of Hezbollah in the last conflict they had with Israel. The pot is going to come to a boil soon if Iraq succeeds and private investmentment flows in there. History flows in one direction.
At a macro level, the dictatorships will begin to fall in two more years and the Arab world will look different by the end of 2010. These matters happen in 9 and 18 year cycles.