A Free Syrian Army fighter runs after attacking a tank with a rocket-propelled grenade during fighting in Aleppo, Syria, in September 2012. The rebels say they are willing to take on the Islamic State, but need more weapons. Manu Brabo/AP hide caption

itoggle caption Manu Brabo/AP

Soldier of U.S. Army 173rd Airborne Brigade prior to an air analysis mission near an oil and gas separation plant at the Baba Gurgur oil field outside northern Iraq's town of Kirkuk in May 2003. Shamil Zhumatov/Reuters/Landov hide caption

itoggle caption Shamil Zhumatov/Reuters/Landov

Microsoft says it's patching a Windows security flaw cited in a report on alleged spying by Russian hackers. Ted S. Warren/AP hide caption

itoggle caption Ted S. Warren/AP

John Yoo, a former lawyer with the U.S. Department of Justice, argues that the NSA's phone records surveillance program is constitutional. Jeff Fusco /Intelligence Squared U.S. hide caption

itoggle caption Jeff Fusco /Intelligence Squared U.S.

Twitter is suing the federal government over First Amendment rights. The tech company says the government stopped it from releasing extra detail about government requests for user information. iStockphoto hide caption

itoggle caption iStockphoto

Secretary of Labor Thomas Perez is a top candidate to be the next attorney general, according to sources familiar with the process. T.J. Kirkpatrick/Getty Images hide caption

itoggle caption T.J. Kirkpatrick/Getty Images

A black flag belonging to the so-called Islamic State is seen in the Syrian town of Kobani on Thursday, as seen from the Turkey-Syria border near the southeastern town of Suruc. Umit Bektas/Reuters/Landov hide caption

itoggle caption Umit Bektas/Reuters/Landov

Paul Pillar (right), a former national intelligence officer, with teammate Aaron David Miller, argues that the U.S. should have a smaller military footprint in the Middle East. Samuel LaHoz/Intelligence Squared U.S. hide caption

itoggle caption Samuel LaHoz/Intelligence Squared U.S.

Leon Panetta says he and other top national security advisers to the president argued to keep some U.S. forces on the ground in Iraq after 2011. Frederic J. Brown/AFP/Getty Images hide caption

itoggle caption Frederic J. Brown/AFP/Getty Images