Twin suicide bombings outside a paramilitary training center in Pakistan’s northwest killed least 80 people, in what appeared to be militants’ first major retaliatory attack since the death of Osama bin Laden.
May 13, 2011 Pakistani security officials inspect the site following an attack outside the Frontier Constabulary headquarters in Shabqadar, Pakistan. The Taliban claimed their first major strike in revenge for Osama bin Laden's death as at least 80 people were killed by two suicide bombers. It was the deadliest attack in Pakistan this year. A. Majeed/AFP/Getty Images Buy Photo