Al-Qaeda has released a 35-minute recording the group claims was narrated by its leader, Ayman al-Zawahri, who was killed in August by the U.S. military in a drone strike in Kabul. The SITE intelligence group said on December 23 that the recording is undated, and the transcript does not clearly point toward a time frame for when it could have been made. Zawahri was killed in the surprise U.S. air strike after being in hiding for years. It was the biggest blow to the militant group since its founder, Osama bin Laden, was killed in 2011. To read the original story from Reuters, click here.