Yassin Musharbash, a German-Jordanian journalist and Jihad watcher, has a short five point commentary '5 Things we don't know about the Caliphate':http://abususu.blogspot.de/2014/08/5...caliphate.html

Why another five point eludes me. He explains, with his emphasis:
So in the interest of self-discipline, academic transparency and self-questioning, here is a brief list of the five most important things we (or I, at least) do not know about the Caliphate, but really wish I knew