Insight-As powers push for talks, Syria balance tilts towards Assad

BEIRUT (Reuters) - More than two and a half years into the civil war devastating Syria, the United States and Russia are pushing the combatants to the negotiating table in Geneva, but on terms that mark a shift in favour of Bashar al-Assad against the increasingly fragmented rebels seeking to oust him.

Since the August 21 nerve gas attacks on rebel suburbs ringing Damascus, which brought the U.S. to the brink of a missile assault on Assad's forces, the diplomatic tide has turned against the opposition, which briefly believed external intervention would enable its forces to launch a final offensive.