Syria and the United Nations have signed an agreement on the terms of a ceasefire monitoring mission, a Reuters witness at the Foreign Ministry in Damascus said.

A statement from the UN-Arab League mediator Kofi Annan said the Syrian government and the United Nations had agreed a basis for a "protocol" on the deployment of more observers.

Click here to read our latest news story on Syria.

For more of Al Jazeera's special coverage visit Syria: The War Within and Inside Syria.

Unverified video below purports to show UN observers arriving in Deraa's Kherbat al-Ghazalah town today: