"Leaving Syria and of course Lebanon to be ruled by a plan agreed by non-Arab countries is a formula for disaster. It will not be sustainable," Moussa said.
"Those who think that this formula will work and the Arabs will salute these four powers solutions, I don't think that this will happen…. At least the Arabs should be represented by the two most important countries — Saudi Arabia and Egypt," Moussa added.
Syrian government and opposition factions are supposed to meet in Astana on January 23 for talks brokered by Russia, Turkey and Iran. They will be followed by a UN-mediated meeting in Geneva on February 8. On Tuesday, Russian Foreign Minister Sergey Lavrov said Moscow considered it appropriate to invite representatives of the new US administration to Syria talks.