You seen your old friend Assad is history and his friends will be the enemies if the new regime so change sides like all those Syrian politicians have done.
Side with the winning team and you will always have the support of the people.
Smart move Nasrallah maybe its enough to make sure the new regime embraces Hezbollah same way as the Assad regime did.
If Iran & Russia were smart they would also dump Assad.
They will not have any political influence in a post Assad Syria as long as they openly support Assad.