From the link above:

To his credit, Reyes, a kindly, thoughtful man who also sits on the Armed Service Committee, does see the undertows drawing the region into chaos.

For example, he knows that the 1,400- year-old split in Islam between Sunnis and Shiites not only fuels the militias and death squads in Iraq, it drives the competition for supremacy across the Middle East between Shiite Iran and Sunni Saudi Arabia.

That’s more than two key Republicans on the Intelligence Committee knew when I interviewed them last summer. Rep. Jo Ann Davis, R-Va., and Terry Everett, R-Ala., both back for another term, were flummoxed by such basic questions, as were several top counterterrorism officials at the FBI.
Amazing.