Protesters rally at Al-Azhar mosque in Cairo, Egypt, Dec. 28, 2012. In a world where the Obama administration, its Arab allies and counterterrorism officials everywhere are working to understand how Muslim youth become radicalized, it's possible to look no further than al Azhar University, the most prestigious institute of Sunni Islam learning in the world. Al Azhar is more than just a local university. It sends imams to Islamic centers all over the world. AP