Security Council members ended an afternoon of private discussions Wednesday about a draft resolution on Syria still riven by major differences but expressing optimism that an agreement could be reached, participants said.

"I think we have a much better understanding of what needs to be done for us to reach a consensus," said Vitaly Churkin, Russian ambassador to the world body.

"Clearly, there is a desire to get a text that can be adopted in the next few days," said Mark Lyall Grant, Britain's ambassador. "But there's a lot of difficult issues and we're not there yet." He said that negotiations will continue Thursday morning.

The British delegation said it hoped for a vote this week; the U.S. delegation said it was not a matter of weeks before a vote could be held; and the French Foreign Minister Alain Juppe was quoted in Paris as saying he hoped for a vote next week.

The Moroccan delegation, which submitted the draft, is now working on an edited version of it, Colombian Ambassador Nestor Osorio told reporters. Discussions Wednesday included whether to support an Arab League plan that calls on Syria to form a unity government within two months but stops short of supporting military intervention or economic sanctions, he said.

"We have more work to do," said U.S. Ambassador Susan Rice. "But I think people are in the spirit of rolling up their sleeves and trying to get to work in a serious manner."

The draft calls for Syrian President Bashar al-Assad to transfer power to his vice president. Al-Assad has faced growing international pressure to stop a bloody crackdown on dissidents seeking his ouster and democratic elections.

Arab and Western diplomats voiced their support for the draft resolution, but representatives from Russia and China -- two of the five Security Council members that have veto power -- have slammed it as meddlesome.

More effective than the resolution, Russia and China said, would be the fostering of dialogue within the country.

But U.S. Secretary of State Hillary Clinton was unsympathetic.

"The Syrian people themselves are the ones who are crying out for peace and justice, for dignity, for their rights, for a better future," she said in Washington. "And every member of the council has to make a decision: Whose side are you on? Are you on the side of the Syrian people? Are you on the side of the Arab League? Are you on the side of the people in the Middle East and North Africa who have during this past year spoken out courageously and often for their rights? Or are you on the side of brutal, dictatorial regime?

"Each country will have to be mulling that over and making a decision. But certainly, from my perspective, as members of the Security Council charged with the responsibility of trying to keep international peace and security, it is absolutely imperative that we all be on the right side of history, and that means standing with the Arab League and standing with the people of Syria."

One Western diplomat, who asked not to be named because of the sensitivity of the matter, said, "People who say that the Security Council should not do regime change should also say that the Security Council does not have to do regime preservation."

Churkin was quoted by state news agency RIA Novosti on Wednesday as saying that Russia would not support any arms embargo on Syria, a major weapons client.

"How can we say that we will tear up all of our contracts, sever all our ties with Syria?" he asked, according to the news agency. "We will not agree to any embargo, not even so much as a hint of an embargo."

Churkin was quoted by the Russian news agency Interfax as saying Moscow would welcome the Security Council's efforts to achieve consensus if the "red lines" Russia has set out are taken into account.

U.N. Secretary General Ban Ki-moon, speaking alongside Israeli President Shimon Peres after talks in Jerusalem on Wednesday, said the members of the Security Council "fully understand the seriousness and urgency of these issues; I sincerely hope that they will be able to take necessary action."

Peres said he hoped the Security Council would "take the proper vote" and pass the resolution.

"When I see people being murdered in broad daylight, in the middle of the street -- it's a human tragedy. And I pay my respect to the Arab League that has decided to intervene and to stop this bloodshed," he said. "I'm speaking as a human being, not as an Israeli."

Russia has said it is concerned about the prospect of a Syrian civil war and does not want al-Assad pushed from power. It has proposed its own draft resolution that assigns equal blame for the violence on al-Assad and the opposition.

But Qatar's prime minister, Sheikh Hamad bin Jassim al-Thani, said "the crisis started with absolutely peaceful demonstrations."

He added, "The government killing machine continues effectively unabated."

In October, Russia and China issued a rare double-veto of a resolution that lacked sanctions but would have condemned the violence in Syria. This latest draft also lacks sanctions, but it is tougher than the October version, which said nothing about a transfer of power.

Rights group Amnesty International urged Russia on Wednesday to rethink its opposition to the latest draft.

"Russia's threats to abort a binding U.N. Security Council resolution on Syria for the second time are utterly irresponsible. Russia bears a heavy responsibility for allowing the brutal crackdown on legitimate dissent in Syria to continue unchecked," said Jose Luis Diaz, Amnesty International's representative to the United Nations.