BAGHDAD, Iraq (AP) - The head of the Iraqi Governing Council was killed Monday in a car bombing near a U.S. checkpoint in central Baghdad, Iraqi officials said. The killing was the second of a member of the U.S.-appointed council since last year and dealt a blow to U.S. efforts to stabilize Iraq ahead of a handover of sovereignty on June 30. Abdel-Zahraa Othman, also known as Izzadine Saleem, was among four Iraqis killed in the blast, according to Redha Jawad Taki, a member of the Supreme Council of the Islamic Revolution in Iraq, a Shiite Muslim organization. As the...