UN-Arab League peace envoy Kofi Annan has said he is "optimistic" following a second round of talks with Syrian President Bashar al-Assad.
He said he had handed over "concrete proposals" to end the bloodshed, but acknowledged no deal was yet in place.
In talks on Saturday, Mr Assad rejected political dialogue while "armed terrorist groups" operated in Syria.
Mr Annan is trying to arrange a ceasefire and gain greater access for humanitarian aid agencies.
But many in the opposition will be sceptical that the Syrian leader will take any notice, the BBC's Jon Donnison reports from neighbouring Lebanon.
Activists say troops are continuing an assault on the city of Idlib where Free Syrian Army fighters are holed up.
The rebel fighters are vastly outgunned and fear a massive prolonged assault similar to that which took place in the city of Homs. Read More