Summary: As the Taliban spring offensive heats up in Afghanistan, here’s a quick guide to 12 of the most-hunted insurgent commanders on the front lines in the AfPak war. … One-year retrospective: One year ago today, on April 21, 2010, Aubrey Immelman reported that the two top-ranking leaders of al-Qaida in Iraq, Abu Omar al-Baghdadi and Abu Ayyub al-Masri, were killed in a joint U.S.-Iraqi operation on Sunday, April 18, 2010, in what Vice President Joe Biden called a “potentially devastating blow” to the terrorist operation.