The headquarters of Syria's ruling party was reportedly targeted in what the government once again described as a terrorist attack.
It was the third straight day of attacks on the center of the capital, among the deepest and fiercest on the heart of Bashar Assad's seat of power during the civil war.
The car bombing was the deadliest attack inside Damascus in nine months and within hours, two other bombings and a mortar attack on the military compound followed.
While no one group has claimed responsibility, the attacks suggest that rebel fighters who have gotten bogged down in their attempts to storm the capital are resorting to guerrilla tactics to loosen Assad's grip on the capital.
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