A list of some of the major bombings in Syria since the uprising against President Bashar Assad's regime began in March 2011.
—Feb. 21, 2013: A car bomb explodes at a security checkpoint near the headquarters of the ruling Baath party in the heart of the Syrian capital, Damascus, killing at least 53 people, according to Syrian state media.
—Jan. 16, 2013: Three car bombings in the northern city of Idlib kill 22 people. State media said attackers targeted a major highway and a traffic circle; anti-regime activists say the bombers were targeting security vehicles near the local security headquarters.
—Jan. 15, 2013: Twin blasts rip through a university campus in the northern city of Aleppo, killing more than 80 people, mostly students, in the government-controlled part of the city.
—Dec.12, 2012: A car bomb targets the Interior Ministry in Damascus, killing several people and wounding more than 20, including the interior minister.
—July 18, 2012: A blast at the Syrian national security building in Damascus during a meeting of Cabinet ministers kills the defense minister and his deputy, who is also Assad's brother-in-law, and wounds the interior minister. Rebels claim responsibility for the blast.
—May 10, 2012: Twin suicide car bombers blow themselves up outside a military intelligence building in Damascus, killing at least 55 people.
—April 27, 2012: Suicide bomber in Damascus kills at least nine people, most of them security officers.
—March 17, 2012: Blasts kill at least 27 people near the intelligence and security buildings in the capital.
—Feb. 10, 2012: Two suicide car bombers hit security compounds in the industrial center of Aleppo, killing 28 people.
—Jan. 6, 2012: Blast at an intersection in Damascus kills 25 people, many of them policemen.
—Dec. 23, 2011: Back-to-back car bombs near Syria's intelligence agencies killed at least 44 in the first major attack in the capital seven months after the uprising erupted.