To know your history-rebel group wants caliphate

http://www.latimes.com/news/world/worldnow/la-fg-wn-iraq-al-qaeda-syria-militants-20130409,0,6119945.story

And, if you do not know what the caliphate is, read this good summary.

http://en.wikipedia.org/wiki/Caliphate

Are American schools teaching World History or Western Civilization?