BAGHDAD, Iraq (AP) - An al-Qaida lieutenant in custody in Iraq has confessed to masterminding most of the car bombings in Baghdad, including the bloody 2003 assault on the U.N. headquarters in the capital, authorities said Monday. Sami Mohammed Ali Said al-Jaaf, also known as Abu Omar al-Kurdi, "confessed to building approximately 75 percent of the car bombs used in attacks in Baghdad" since the Iraq war began, according to the interim Iraqi prime minister's spokesman, Thaer al-Naqib. A government statement said Al-Jaaf was taken into custody Jan. 15 and was responsible for 32 car bombings, including the bombing of...