17 Million Iraqis and 9 million Syrians have now been displaced by the wars

One of the reasons Obama is being forced by circumstances worldwide to send drones with Hellfire missiles and maybe jets into Syria is the above fact. ISIS has just terrified too many people. When you combine the 9 million Syrians (mostly Sunni) now displaced by the Syrian revolution and now the 17 million Iraqis displaced by ISIS you have two flip sides of each other.

Because most of the 9 million Syrians displaced are Sunnis and most of the 17 million displaced Iraqis likely are Shia, Christian, Yazidi and Turkmen and any Sunnis who don't want to be a part of ISIS.

However, 26 million displaced people in any country likely is the largest refugee population in any area of the world at present and a total humanitarian crisis in itself which is drawing now the whole world's attention.

IF ISIS and 26 million refugees and Ebola intersect at some point in the near or far future this likely will get much worse on a multiplicity of levels for the world to deal with. Because both ISIS and Ebola have the tendency to fully collapse infrastructures, governments and civilization itself wherever they go.