The Arab League has called for United Nations and international measures against Syria over the recent chemical weapons gas attack.
The final resolution of a meeting of foreign ministers in Cairo urged the United Nations and international community to "take the deterrent and necessary measures against the culprits of this crime that the Syrian regime bears responsibility for".
The ministers also said those responsible for the attack should face trial, as other "war criminals" have.
The Saudi foreign minister Saud al-Faisal said it is time for the world to do everything it can to prevent aggression against the Syrian people, and that it would back a US strike on Syria if the Syrian people did.
"We call upon the international community with all its power to stop this aggression against the Syrian people," Faisal said in Cairo, where he was attending a meeting of Arab League foreign ministers to discuss Syria.
On the prospect of a US strike, he said: "We stand by the will of the Syrian people. They know best their interests, so whatever they accept, we accept, and whatever they refuse, we refuse." The meeting was expected formally to blame Assad for the gas attack.
UN chief Ban Ki-moon has urged the chief chemical weapons inspector to report back on the evidence from Syria "as soon as possible," a UN spokesman said today.
United Nations weapons inspectors, who had been gathering evidence and samples relating to alleged chemical weapons, arrived at the Organisation for the Prohibition of Chemical Weapons (OPCW) in The Hague on Saturday.
A spokesman for the OPCW said samples the inspectors brought with them would be distributed between various laboratories for testing.
Analysis of evidence collected by UN weapons inspectors in Syria will take up to three weeks, the Organisation for the Prohibition of Chemical Weapons (OPCW) said in a statement.
A UN spokesman rejected any suggestion that the United Nations is somehow stepping aside to allow US strikes on Syria as "grotesque".
He added that the UN will share with members findings of its chemical weapons team after evidence analysed in laboratories.
A UN spokesman has said the United Nation's is "uniquely capable" of finding chemical weapons evidence in Syria.
– UN spokesman for UN Secretary-General
The United Nation's mission is uniquely capable of establishing in an impartial and credible manner the facts of any use of chemical weapons based directly on evidence collected on the ground
A UN spokesman said that the weapons inspection mission in Syria was able to examine evidence from Damascus.
He said: "The mission was able to conduct a wide range of fact finding activities pertaining to 21 August incident."
A plane believed to be carrying UN weapons inspectors from Syria has arrived in the Netherlands.
Some Syrians have begun fleeing to neighbouring Lebanon amid the threat of a military attack by the United States.