Ever noticed how so many Arab countries have flags with the same colors—red, black, white, and green? It’s not a coincidence.

But according to a report in the Arab press, the so-called “Islamic Caliphate” flag — the basis of the al-Qaeda flag — was already being flown by anti-Qaddafi forces during the siege of ...

A caliphate flag used by Muslims historically reads "There is no god but Allah; Muhammad is the Messenger of Allah" When the extremist group Isis (now known as Islamic State or IS) declared a ...

The new caliph is the militants' shadowy leader, Abu Bakr al-Baghdadi.My colleagues have already explored what this declaration means for ISIS (now also referred to simply as "IS", for the Islamic ...

Business Insider spoke with Tim Marshall, author of "Worth Dying For: The Power and Politics of Flags" about the impact of the black flag of ISIS. He said: "The ISIS flag is a pretty clever piece ...