Clay Varney is an intern at the Center for Security Policy and a Master's candidate in International Security at the University of Denver.

CENTERFORSECURITYPOLICY: Don't make the same mistake twice

Timbuktu was a thriving commercial hub and a center of Islamic scholarship in the 14th and 15th centuries, and it's home to three clay mosques that date back more than 700 years.

CNN: African Union adds to sanctions in Mali