US officials said the target was a convoy of trucks that Israel believed contained anti-aircraft weapons bound for Hezbollah in Lebanon.
Regional officials said the shipment included sophisticated Russian-made SA-17 anti-aircraft missiles, which if acquired by Hezbollah, would be “game-changing,” enabling the militants to shoot down Israeli jets, helicopters and surveillance drones.
Syria threatened Thursday to retaliate for the Israeli airstrike, and its ally Iran said there will be repercussions for the Jewish state over the attack.
Syrian ambassador to Lebanon Ali Abdul-Karim Ali said Damascus “has the option and the capacity to surprise in retaliation.”
Hezbollah condemned the attack as “barbaric aggression” and Syrian ally Russia said it appeared to be an unprovoked attack on a sovereign nation.