With all those protests and revolutions occurring, this is creating a war climate.
Remember after World War I that a few countries had their government overthrown or changed into a different one (Germany, Italy, etc...)? Dictators invaded other countries and thus, World War II started.
This is coming off the heels of the recently ended Iraq War. So far, Tunisia and Egypt have successfully overthrew their government, and very soon, Libya as well. As other countries suffer the same fate (Yemen, Iraq, Jordan, etc...), as others have said, the Middle East will be changed forever.
If all protesting countries get their government overthrown and if even one of those countries wants to take over land in other countries, it is possible that a war similar to what we would call World War III, which will take place not only there, but in Europe, other parts of Asia and Africa, and possibly Oceania and North America.