United Nations: The UN Security Council has unanimously passed a resolution that authorises a supervision mission of 300 unarmed military observers to be deployed in Syria for three months to monitor the ceasefire in the conflict-ridden country.

UN resolution 2043, introduced by Russia on Saturday, said deployment of the UN observer mission will be "subject to assessment by the Secretary-General (Ban Ki-moon) of relevant developments on the ground, including the cessation of violence".

UN Secretary-General Ban Ki Moon strongly welcomed the unanimous decision of the Security Council to authorise the United Nations Supervision Mission in Syria (UNSMIS) for an initial period of 90 days.

The Secretary-General "calls upon the Government of Syria and other parties swiftly to create the conditions necessary for the deployment of the mission," a statement released by his spokesperson said here.

India's Ambassador to the UN Hardeep Singh Puri said India voted in favour of the resolution with the "expectation that UNSMIS will implement its mandate impartially, objectively and fairly and help the Syrian parties to build on the ceasefire and commence an inclusive Syrian-led political process that will meet the legitimate aspirations of the Syrian people".

Puri described the adoption of the resolution as a "significant step" in the 15-nation UNSC's collective support for the efforts of the Joint Special Envoy Kofi Annan to help bring an end to the year long violence in Syria where about 9000 people have been killed.

Puri said the resolution is an appeal to all parties to "walk back from violence so that an impartial supervision and monitoring of the ceasefire can contribute to observing and upholding the commitment of the parties".

The Indian envoy said for Annan's six-point peace plan to be successful, it is necessary that all parties, including the opposition, in Syria fulfill their commitments.

Puri said while the Syrian parties cooperate with UNSMIS and Annan, it is also necessary that all countries interested in securing peace and stability in Syria extend their full support to the mission and "refrain" from any action that may cause further bloodshed.

"This will help in the expeditious resolution of the Syrian crisis as well as in ensuring that the crisis does not spill over Syria's borders," Puri added.

Ban stressed the need for the Syria government to end all violence and human rights violations, particularly to stop the use of heavy weapons and withdraw such weapons and armed units from population centres.

Ban called for full cooperation by all to allow UNSMIS to implement its mandate, which includes monitoring a cessation of armed violence in all its forms by all parties and to monitor and support the full implementation of Joint Special Envoy Annan's six-point peace proposal.

Ban said he expects the Syrian government to ensure the effective operation of UNSMIS, including full, unimpeded and immediate freedom of movement and access, unobstructed communications and the safety of the mission.

"The challenges on the ground are serious. Too many lives have been lost. The gross violations of the fundamental rights of the Syrian people must stop at once," Ban said, adding that the establishment of UNSMIS will help stop the killing and suffering in Syria.