The US added a wanted Saudi al Qaeda leader, Abu Maryam al Zahrani, to its list of designated terrorists. David Coleman Headley, the Pakistani-born US citizen who helped the Lashkar-e-Taiba carry out the 2008 Mumbai attacks, was sentenced to 35 years in prison. The Pentagon released a timeline of the Sept. 11, 2012 attack on the US Consulate in Benghazi. At the request of Pakistan, China, and Russia, the UN has launched an investigation into drone warfare and targeted killings.