In recent days, the regime of President Bashar Assad has suffered significant setbacks in northern Syria. This may not be the end, but it only affirms that the dynamics of the conflict are being driven by the armed opposition, so that for the first time since March 2011, Assad rule appears to be decisively shaken, not to say terminally ill. From a Lebanese perspective, the greatest danger will come once the battle in Syria is over. Lebanese Sunnis will feel triumphant, and legitimately so, after decades when they were regarded as a threat by the Assad regime. Their sense of renewed empowerment, in parallel with that of their brethren in Syria, could make them overconfident. This in turn could bring them into confrontation with an increasingly fearful but still militarily potent Lebanese Shiite community, led by Hezbollah. Managing this phase properly will require mechanisms of compromise and dialogue to avert the worst.