WILLIAM Hague, the Foreign Secretary, has warned the coming days are likely to bring an escalation of violence and bloodshed in Syria as the regime of President Bashar al Assad unleashes its armed forces for a major assault on rebel stronghold Aleppo.

Reports from Aleppo – Syria's largest city and commercial hub – said forces loyal to the Assad regime were using heavy artillery, planes and a helicopter gunship to bombard rebel positions in a battle that could determine the outcome of the 17-month uprising.

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