Syria crisis: Fresh clashes rock Damascus and Aleppo

The BBC's Jim Muir reports from Beirut on the assault by government forces in Damascus and Aleppo

Fierce fighting is reported in Syria's two biggest cities - Damascus and Aleppo - as government forces seek to regain control of rebel-held areas.
The army's elite fourth division, backed by helicopters, has reportedly launched an assault on the capital's north-eastern suburb of Barzeh.
Troops were also said to have deployed in the western suburb of Mezzeh.
Fighting also continued for a third day in Aleppo, where activists said a building had collapsed under tankfire.
The violence follows a week in which rebels made major advances, taking control of several parts of Damascus, seizing border crossings and claiming an attack that killed four top security officials, including the defence minister and President Bashar al-Assad's brother-in-law.
Meanwhile, the UK-based Syrian Observatory for Human Rights has reported that at least 19,106 people had been killed since March 2011.
They included 13,296 civilians, including those who had taken up arms, as well as 4,861 security personnel and 949 army defectors, it said.
The UN said in May that at least 10,000 people had been killed, while in June the Syrian government reported that 6,947 Syrians had died, including at least 3,211 civilians and 2,566 security forces personnel.

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