Syrian city of Deir al-Zour attacked by tanks
7 August 2011 Last updated at 17:25 BST
At least 42 people have died after the Syrian army stormed Deir al-Zour, the largest city in the east and a scene of frequent protests, activists say.
Scores of tanks and armoured vehicles are reported to have entered several areas of the city after a heavy bombardment that began before dawn.
At least 13 other people have been killed in Homs province, activists say.
President Bashar al-Assad has defended his security forces' deadly crackdown on dissent.
Jim Muir reports.