Syria roundup:

Syrian forces shell two Damascus neighborhoods (+video) - CSMonitor.com

Syrian regime forces shelled two Damascus districts Wednesday before troops backed by tanks swept through to carry out house-to-house raids in search of opposition fighters, killing at least 31 suspected rebels, activists said.

The Air War in Aleppo - By Justin Vela | Foreign Policy

Syrian rebels have largely cleared regime troops from the area between the Turkish border and Aleppo, the country's economic hub and largest city. Abdul Nasser al-Khatib, a rebel commander in the newly formed al-Tawhid ("Unity") Brigade, an organization of rebel groups around Aleppo, claimed that opposition forces hold an approximately 125- by 25-mile area in the north.
Aug 22 (Reuters) - The death toll from fighting between Lebanese Sunni Muslims and Alawites echoing the conflict in Syria climbed to at least 12 on Wednesday, the third day of clashes described as some of the heaviest since Lebanon's 1975-90 civil war.
More than 100 people have been wounded in the bloodshed this week along a sectarian fault line in the northern city of Tripoli running between the Sunni district of Bab al-Tabbaneh and the Alawite area of Jebel Mohsen.

Syria's neighbors dragged into conflict: Jordan's border villages hit | Al Bawaba

Jordan summoned on Sunday the Syrian ambassador after four rockets fired by Syrian regime forces fell inside its northern border area, wounding a young girl, Al Arabiya TV reported.

BBC News - Deadly fighting over Syria grips north Lebanon

At least eight people have been killed and 75 wounded in the Lebanese city of Tripoli in clashes between opponents and supporters of Syria's president.
Leaders of the Sunni Muslim district of Bab al-Tabbana and the Alawite district of Jabal Muhsin have declared a ceasefire from 17:00 (14:00 GMT).
Earlier, the army tried to bring a halt to the fighting, which began on Monday night, but it was forced to retreat.

Turkey Probes Possible Syria Involvement in Car Bomb

ISTANBUL (Reuters) – Turkey is investigating possible Syrian links to Monday’s deadly car bomb attack near its south-eastern border, officials said on Tuesday, underscoring fears that the conflict in Syria is fuelling instability on its own territory.