Ayman al-Zawahiri was considered a planner of that attack and others. He was once a deputy of Osama bin Laden. He ascended to al-Qaida's top position when the U.S. killed bin Laden in 2011.

Jan. 13, 2006 &#151 -- Today, according to Pakistani military sources, U.S. aircraft attacked a compound known to be frequented by high-level al Qaeda operatives. Pakistani offici ...