Syria's opposition join forces

clipped from video description: Uploaded by AlJazeeraEnglish on Dec 31, 2011

The two leading Syrian opposition blocs have agreed on a roadmap, in the event of a popular uprising succeeding in toppling the government of President Bashar al-Assad.

In a document signed in Cairo, the National Co-ordination Committee and the Syrian National Council, called for civilians to be protected under international law.

They also rejected any foreign intervention that could affect Syria's sovereignty and demanded a new constitution with a transition to democracy.

The latest development came as hundreds of thousands took to the streets across the country on Friday, aiming to demonstrate the strength of their movement to Arab League monitors checking whether Assad is implementing a pledge to halt a violent crackdown on unrest that has been raging since March.

Al Jazeera's Hashem Ahelbarra reports from the Syrian-Turkish border.