Sen. Ted Cruz, R-Texas (center left) is a Tea Party favorite, whom observers count as a possible 2016 presidential candidate. He voted against President Obama's plan to fight the Islamic State. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

"In that instant I realized how much energy it takes to hold that hatred inside of you" — Zak Ebrahim James Duncan Davidson/TED hide caption

itoggle caption James Duncan Davidson/TED

A remote camera screen grab provided by the French army shows two Rafale jet fighters flying over Iraq on Friday. French President Francois Hollande announced that the fighters had carried out their first airstrikes in northern Iraq. AP hide caption

itoggle caption AP