(CNN) – Abu Yahya al-Libi, al Qaeda's No. 2 man, was killed in Pakistan on Monday, according to U.S. officials. Al-Libi's death was "another serious blow to core al Qaeda," White House spokesman Jay Carney said. Al-Libi, 49, was a well-regarded figure in jihadist circles and had emerged as one of the terrorist network's most … Continue reading Explainer: What al-Libi's death means for al Qaeda