Syrian President Bashar al-Assad flew out of Damascus for an unknown destination on Sunday, as rebels said they had infiltrated the capital with no sign of army deployments. Syrian army units abandoned their positions on the outskirts of Damascus on Saturday night, fleeing the advance of rebel forces. The military said it was “reinforcing” defensive lines around the capital, which appeared to have collapsed. Mohammed al-Rahmoun, the Syrian interior minister, earlier said there was a “very strong security cordon on the outskirts of Damascus and no one can break it”. But the Syrian opposition fighters early on Sunday disproved this,...