Loay Hameed / AP Photo
At least 21 people died and 53 were wounded in four bombings throughout Baghdad on Monday. The attacks come as the U.S. prepares to withdraw from Iraq by June 30, and two days after the year's deadliest attack, which killed 75 people in northern Iraq via truck bomb. Today's Baghdad bombings included: a roadside bomb that exploded next to a bus carrying students to their final exams in a Shiite bastion, killing at least three and wounding 13; a car bombing in the Karradah district that killed at least five and wounded 20; a roadside bomb that targeted a police patrol in the Ur district that killed 3 and wounded 25; and a man in an explosive vest who exploded himself at a checkpoint leading to the mayor's offices in Abu Ghraib, killing two and wounding five.