In a statement, the military said the targets included what it described as Iranian intelligence sites; a logistics headquarters belonging to the Quds Force of the Revolutionary Guards; military compounds; munition storage warehouses of the Quds Force at Damascus International Airport; intelligence systems associated with those forces; and military posts and munition in the buffer zone between the Syrian Golan Heights and the Israeli-occupied portion of the strategic plateau.
There was no immediate information about casualties in Syria. Israel reported none on its side. Colonel Conricus said the barrage of approximately 20 Grad and Fajr-5 rockets fired from Syria and aimed at Israeli positions after midnight was launched under the command of the Quds Force and utilized Iranian weapons.
Four of the rockets were intercepted by Israel’s Iron Dome antimissile defense system, and the rest fell short of the Israeli-controlled territory, the military said. Indeed, by Thursday morning, Israeli life returned to routine in the Golan Heights, with children going to school.
The barrage came after an apparent Israeli missile strike against a village in the Syrian Golan Heights late Wednesday.
Mr. Netanyahu said this week that the Revolutionary Guards had moved advanced weapons to Syria, including ground-to-ground missiles, weaponized drones and Iranian antiaircraft batteries that he said would threaten Israel’s military jets.
While appearing to almost goad the Iranians to strike, Israel had warned Tehran that it would respond to any attack. Israel also broadcast warnings to Syria, saying that allowing Iranian entrenchment in its territory put Mr. Assad’s government at risk.
Israel said Russia, whose forces have been supporting Mr. Assad, had been informed before the overnight attack. On Wednesday, Mr. Netanyahu spent about 10 hours in Moscow with President Vladimir V. Putin of Russia.
In recent years, Israel has carried out scores of strikes against what it says are advanced weapons and convoys destined for Hezbollah, the Iranian-backed force in Lebanon. But since February, when Israel intercepted what it later called an armed Iranian drone that had penetrated its airspace from Syria, setting off a day of heated cross-border exchanges, Israel’s efforts appear to have been more focused on Iranian assets in Syria.