A senior Russian diplomat warned Tuesday that a draft U.N. resolution demanding Syrian President Bashar Assad step aside is a "path to civil war," as Syrian troops crushed pockets of resistance by rebel soldiers on the outskirts of Damascus.

The U.N. Security Council was to meet Tuesday to discuss the draft, backed by Western and some Arab powers. But Russia would likely veto any punitive action.

"The Western draft Security Council resolution on Syria does not lead to a search for compromise," Russia’s Deputy Foreign Minister Gennady Gatilov wrote on Twitter. "Pushing this resolution is a path to civil war."

Russia has been one of Assad’s strongest backers as he tries to crush an uprising that began nearly 11 months ago. In October, Moscow vetoed the first council attempt to condemn Syria’s crackdown and has shown little sign of budging in its opposition.

Russia fears the new measure could open the door to eventual military intervention, the way an Arab-backed U.N. resolution provided the mandate for NATO airstrikes in Libya.

The U.N. estimates that more than 5,400 people have been killed in the Syrian government crackdown. The bloodshed spiked Monday as regime forces retook control of the eastern suburbs of Damascus after rebel soldiers briefly captured them.

The death toll from Monday’s offensive was around 100 people, making it one among the bloodiest days since the uprising began in March, according to the British-based Syrian Observatory for Human Rights and the Local Coordination Committees, an opposition group.

Early Tuesday, government forces moved into the two towns near Damascus still in rebel hands.

"Intense shooting was heard in Zamalka and Arbeen as the tanks advanced," the Observatory said, citing its network of sources on the ground. Regime forces made sweeping arrests in the nearby town of Rankous, activists said.

Western and Arab countries, meanwhile, stepped up pressure on Assad’s ally Russia to overcome its opposition to a draft resolution.

The draft resolution demands that Assad halt the crackdown and implement an Arab peace plan that calls for him to hand over power to his vice president and allow creation of a unity government to pave the way for elections. It also rules out the use of foreign forces in the country.

If Assad fails to comply within 15 days, the council would consider "further measures," a reference to a possible move to impose economic or other sanctions.

During a trip to Jordan on Tuesday, U.N. Secretary-General Ban Ki-moon called on Assad to stop the killings and he said he hopes Security Council members reach a consensus on Syria.

U.S. Secretary of State Hillary Rodham Clinton and the British and French foreign ministers were heading to New York to push for backing of the measure.

"The status quo is unsustainable," Clinton said, saying the Assad regime was preventing a peaceful transition and warning that the resulting instability could "spill over throughout the region."