BEIRUT (AP) - Syrian rebels struck deep in the fortress-like inner sanctum of President Bashar Assad's rule Wednesday in Damascus, detonating two car bombs that engulfed the army headquarters in flames.
The suicide bombings and subsequent gun battles in the Syrian capital killed at least five people, including a reporter for Iranian TV. The carefully orchestrated attacks highlighted the regime's growing vulnerability, even as the 18-month battle to bring down Assad is locked in a stalemate.
International diplomacy has failed to stop the bloodshed.
Making his debut on the global stage at the United Nations, Egypt's new President Mohammed Morsi said he will not rest until Syria's civil war is brought to an end. He called it the "tragedy of the age" and one that "we all must end."
Morsi has launched an "Islamic Quartet" of regional powers to seek an end to the violence, but he has not offered a specific plan of action.
The explosions targeting the Syrian military compound went off about 10 minutes apart, around 7 a.m., with the first blast possibly meant to create a diversion to enable the second attacker to get into the compound.
Security camera footage aired by Syrian state TV showed a white van driving on a busy thoroughfare outside the military compound, then veering to the right and exploding. The footage showed a second blast going off inside the complex, with flames rising up behind trees.
After the second explosion, rebel fighters and regime forces exchanged fire for more than three hours, including inside the military compound, said Rami Abdul-Rahman of the Britain-based Syrian Observatory for Human Rights, an activist group. The fighting spilled over into nearby Omayyad Square, with regime troops - some wildly firing in the air - chasing after rebel gunmen, witnesses said.
Syrian state TV reported that four army guards were killed and 14 people were wounded, including civilians and military personnel.
The Iranian English language Press TV said one of its Syrian correspondents, 33-year-old Maya Nasser, was killed by a rebel sniper following the blast. The station replayed Nasser's last report, in which he was on the phone from Damascus during a live broadcast, when the line suddenly went silent. The Damascus bureau chief for Press TV, Hosein Mortada, was wounded in the clashes.
Abdul-Rahman said the regime was underreporting casualties in an attempt to play down the severity of the attacks.
Fear spread among residents of the nearby Malki area, an upscale district that has largely been sheltered from the battles that usually rage in the city's impoverished belt of suburbs.
"It is obvious that there are no more safe areas in Syria," said Hala, a 28-year-old resident who only gave her first name for fear of repercussions. "We are all under fire."
Rebels have targeted the center of Damascus with bomb attacks in the past, most dramatically in July when they detonated explosives inside a high-level crisis meeting in Damascus that killed four top regime officials, including Assad's brother-in-law and the defense minister.
However, predictions that such attacks could accelerate the regime's demise have proven premature, and both sides have dug in, each unable to deliver a knockout blow.
The two sides are deadlocked in the northern battle for Aleppo, Syria's largest city. In the western slice of Syria that is most heavily populated, rebels control large swaths of the countryside, while the regime is clinging to urban centers.