Russia vetoed a UN resolution drafted by France, demanding an immediate end to the bombing campaign being carried out by Russia, the Syrian government’s ally, in rebel-held districts of Aleppo.
A rival measure put forward by Russia, which called for a ceasefire but made no mention of a halt to the airstrikes, was rejected after failing to get nine votes from the 15-member council.
It was the fifth time Moscow used its veto to block UN action to end the five-year war in Syria, which has claimed 300,000 lives.
Russia's UN ambassador Vitaly Churkin, the current rotating council president, called the vote a “waste of time" and “inadmissible”, claiming the Security Council met knowing that neither resolution would be adopted.
Nine countries, including the UK, France and the United States, voted against the Russian draft. Russia, China, Egypt and Venezuela voted in favour, while Angola and Uruguay abstained.
The measure presented by France won 11 votes, but Russia and Venezuela voted against. China and Angola abstained.
The votes reflected the deep divisions in the UN's most powerful body which is charged with ensuring international peace and security but has failed to take action to end the five-year Syrian conflict which has killed more than 300,000 people and displaced millions.
As the council meeting got underway, the Syrian regime pushed its assault on rebel-held areas of Aleppo, where 125,000 people are living under siege and facing almost daily bombing, AFP reports.
French Foreign Minister Jean-Marc Ayrault urged the council to take immediate action to save Aleppo: "What is at stake today is first and foremost the fate of Aleppo and its people," told the council.
He compared Aleppo to Guernica during the Spanish Civil War in the 1930s, Srebrenica during the Bosnian war and the Chechen capital Grozny which was pummelled by the Russian army in the mid-1990s.
Mr Ayrault warned the continued bombing of Aleppo was killing civilians and destroying hospitals and schools - "and has nothing to do with combating terrorism," as Syrian president Bashar Assad's government and ally Russia claim.
Mr Churkin said the demand for a bombing halt in Aleppo was "not fleshed out" and would affect the government-controlled western part of the city as well as the rebel-held east.
When Syria's UN ambassador Bashar Ja'afari started speaking a number of ambassadors walked out, including the representatives of the UK, France, Ukraine and the US.
The Syrian and Russian bombing campaign has escalated since the Russian-backed Syrian army launched an offensive to retake the city on 22 September.
Additional reporting by Press Association
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