The Syrian government and Hezbollah have historically acted as allies, but two important changes have occurred. First, Israel has pounded Hezbollah positions inside Lebanon in recent months, badly weakening the group and killing most of its leadership. Second, the current Syrian regime is composed of fighters who defeated the government of Bashar Assad, which had been Hezbollah’s reliable regional partner. Assad now lives in Moscow under Russian President Vladimir Putin’s protection.
Hezbollah has good reason for frustration. In the past, when its fighters needed more weapons and materiel, Iran provided them by sending reinforcements across Syrian territory. The new Syrian government has severed that channel. The Lebanese and Syrian armies say they have increased cross-border communication to restore calm, though Hezbollah representatives remain defiant.