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Muzaffar Salman, Associated Press
Syrian soldiers chant slogans during a pro-regime rally in Damascus, Syria, Friday, Dec. 30, 2011.The rebel Free Syrian Army said Friday it has stopped its offensive against government targets during a month-long mission by Arab Legue monitors, saying it wants to expose how the regime is killing peaceful protesters.

BEIRUT — Syria's two largest opposition groups have signed a draft agreement on setting up a democracy after President Bashar Assad's regime falls.

The move is so far the most serious by the fractured opposition to unite against the regime.

Representatives from the Syrian National Council and the National Coordination Body for Democratic Change in Syria, or NCB, say the draft was signed in Cairo on Friday night.

NCB's Hassan Abdul-Azim and Omar Idlibi of the SNC told The Associated Press on Saturday that both groups agree Assad's regime must go and be replaced by a democracy.

Syria's uprising began in March, inspired by other Arab Spring revolts. The U.N. says more than 5,000 people have died as the government has sought to crush the revolt.