The UN Security Council met again behind closed doors Wednesday afternoon to discuss the Arab-European draft resolution on Syria, as council members failed to reach agreement on the issue after a closed-door session and an open meeting with the Arab League.

The draft resolution, drawn up by Arab states and European giants Britain, France and Germany, was presented to the council by Morocco on Friday at the first UN closed session on Syria.

The draft calls for the UN Security Council to back an Arab League plan, which demands Syrian President Bashar al-Assad hand over power to his deputy so that new elections could be held.

But it is unlikely that the UN Security Council will churn out a resolution on Syria soon as members' positions remain irreconcilable.

Russia, which holds veto power in the UN Security Council, said Wednesday that it would block any resolution on Syria if the draft was considered "unacceptable."

"If the text would aggravate the conflict (in Syria), we consider it wrong and will not let it to be adopted," Russia's UN ambassador Vitally Churkin said.

He also warned that a poorly considered resolution could lead to "a deep regional crisis" and Moscow will proceed solely from its own position of principle.

Russia has made clear its opposition to any unilateral sanctions on Syria and pressure for Syrian President Assad to step down.

Russia recently offered to host unconditional informal talks between the Syrian authorities and the opposition, a proposal accepted by the Syrian authorities but still awaiting response from the opposition.

Meanwhile, the United States expressed explicit support to the Arab League plan that urges Assad to cede power to his deputy.

"In accordance with the Arab League's plan, Syria must also release all arbitrarily detained citizens, return its military and security forces to their barracks, and allow full and unhindered access for monitors, humanitarian workers, and journalists," U.S. Secretary of State Hillary Clinton said at a Tuesday meeting between the Arab League and the UN Security Council.

China, also a permanent member of the council, hopes to see "a proper settlement of the Syrian crisis within the framework of the Arab League," said Li Baodong, the Chinese permanent representative to the United Nations.

He also said that China firmly opposes the use of force, the practice to push forcefully for "regime change" and other actions that violate the purposes and principles of the UN Charter and the basic norms guiding international relations.

The Chinese Foreign Ministry also issued a travel warning on its website Wednesday, calling on Chinese nationals to avoid travelling to Syria for the time being and urging Chinese companies in Syria to enhance security.

As an important player in resolving the Syrian crisis, the Arab League urged the UN Security Council to take "rapid, decisive action" on Syria, saying failure to do so would lead to more loss of civilian lives.

The league suspended a monitoring mission in Syria recently, citing security reasons.

Syria reaffirmed its rejection to any decision outside the Arab League.

Speaking at the Tuesday meeting between the UN Security Council and the Arab League, Syria's UN ambassador Bashar al-Jafari said the draft resolution, if adopted, would be "a blatant violation" of the sovereignty of Syria, intervention of the internal affairs of Syria, and the Charter of the Arab League.