Barack Hussein Obama knows full well that history is repeating itself under his rule…. Jews and Christians lived in Jerusalem for a very long time before Islamic Extremists (Muslims) invaded, raped, murdered, and enslaved the Christians and Jews and established the Caliphate and ruled by Sharia…. and that is what Europe’s “Crusade” was about…. finally standing up to ISIS’s religious and political ancestors.
“… formation of a state in the Arabian peninsula and ideological (i.e. religious) coherence and mobilization was a primary reason why the Muslim armies in the space of a hundred years were able to establish the largest pre-modern empire until that time. The estimates for the size of the Islamic Caliphate suggest it was more than thirteen million square kilometers (five million square miles), making it larger than all current states except the Russian Federation.”