It was already looking likely that President Bashar al-Assad's regime would survive - it has had the upper hand militarily in the Syrian civil war for at least six months now - but the events of the past two weeks have made it virtually certain.
Syria has already complied with the two initial demands of the Russian-American deal concluded over Assad's head last week. It has signed the Chemical Weapons Convention, and it has given a list of all Syria's poison gas facilities and storage depots to the Organisation for the Prohibition of Chemical Weapons. That means that the United States cannot attack it for at least a year.
President Barack Obama's ability to order such an attack was already in doubt because of opposition in Congress. Now he could not bomb without endangering UN inspectors, who will be all over the regime-controlled parts of Syria by November to take control of the estimated thousand tonnes of chemical weapons. Syria has a year to destroy them all, and until and unless it fails to meet that deadline, bombing is out of the question.
The civil war will probably continue during the coming year, and possibly for a good deal longer. Assad's troops have been winning back territory in the centre of the country, but they have yet to make much progress in the north, the south or the east. They lack the numbers to finish the job now, but the tide is running in their direction.
Close to a thousand separate rebel units are now operating in Syria, but there is no unified rebel army. The armed groups can be roughly divided into jihadists (many of them foreign) who want to create an Islamic caliphate in Syria, and more moderate groups who originally took up arms hoping to create a democratic Syria freed from the Baath Party's tyranny.