BEIRUT – Syrian rebels used captured tanks to launch a fresh offensive on a government complex housing a police academy in the north on Sunday as they continued to log a string of strategic victories against President Bashar Assad's troops who countered with airstrikes.
If rebels capture the complex in Allepo, which also houses several smaller army outposts, it would be another setback for the Assad regime. In recent weeks, the regime has lost control of key infrastructure in the northeast including a hydroelectric dam, a major oil field and two army bases along the road linking Aleppo with the airport to its east.
Rebels also have been hitting the heart of Damascus with occasional mortars shells or bombings, posing a stiff challenge to Assad's regime in its seat of power.
On Saturday, opposition fighters in the eastern province of Deir el-Zour overran a site known as al-Kibar, which was home to what is believed to have been a partly built nuclear reactor that Israeli warplanes bombed in 2007.
A year after the strike, the U.N. nuclear watchdog determined that the destroyed building's size and structure fit specifications of a nuclear reactor. Syria never stated the purpose of the site.
After the bombing, the regime carted away all the debris from the destroyed building and equipment from the two standing structures, analysts said, adding that the rebels were unlikely to have found any weapons in the abandoned complex.
"It's more or less a shell because the Syrians decided to remove everything inside the buildings," said Mustafa Alani, an analyst with the Gulf Research Center in Geneva. "I don't think there's anything left really of any value for the rebels."
Rami Abdul-Rahman, the director of the Britain-based Syrian Observatory for Human Rights, said rebels have been trying for months to storm the government complex west of Aleppo in the suburb of Khan al-Asal.
Assad's forces have been locked in a stalemate with rebels in Aleppo since July, when the nation's largest city and commercial hub became a major front in the civil war.
Months of heavy street fighting have left whole neighborhoods in the city in ruins, carving it up into areas controlled by the regime and others held by rebels with both sides shelling each other's positions. Rebels have also been trying for weeks to capture Aleppo's International Airport.
There were no reports of fighting for the airport on Sunday. But there have been battles around a section of the highway the army has been using to transport troops and supplies to a military base within the airport complex.
On Friday, regime forces fired three missiles into a rebel-held area in eastern Aleppo, hitting several buildings and killing 37 people, according to the Observatory. It said the strike apparently involved ground-to-ground missiles. A similar attack on Tuesday in another impoverished Aleppo neighborhood killed at least 33 people, almost half of them children.
The United Nations says at least 70,000 people have been killed since Syria's uprising against Assad's authoritarian rule began nearly two years ago. Efforts to stop the bloodshed in Syria so far have failed, leaving the international community at a loss of how to end the civil war.
A senior Syrian opposition leader said Sunday that his umbrella group has suspended participation in meetings with its Western backers and their Arab allies because of their indifference over the regime's attacks on the Syrian people in Aleppo and in other cities.
"Assad has reached the stage of real genocide amid Arab silence and we renounce that," said George Sabra, vice president of the Syrian National Coalition. He spoke to reporters in Cairo after meeting the Arab League chief Nabil Elaraby.
On Friday, a statement posted on the Facebook page of Sabra's opposition group said its leaders would not travel to Washington or Moscow for any talks to protest the international community's "silence over crimes committed by the regime."
The statement also said that the opposition leaders would boycott a meeting next month in Rome of the Friends of Syria, which includes the United States and its European allies.
In Washington, the State Department condemned rocket attacks on Aleppo, saying in a statement late Saturday the strikes are the "latest demonstrations of the Syrian regime's ruthlessness and its lack of compassion for the Syrian people it claims to represent."
Associated Press writer Ryan Lucas contributed to this report.