Syria's information minister has warned that Israeli air raids against three targets on the outskirts of Damascus "open the door to all possibilities", Al Jazeera reported.
Omran al-Zoubie's comments in Damascus on Sunday came after an emergency cabinet meeting organised to respond to what a Western source said was a new attack on Iranian missiles bound for Lebanon's Hezbollah.
Although Zoubie did not hint at a concrete course of action, he said it was Syria's duty to protect the state from any "domestic or foreign attack through all available means".
He claimed the Israeli attacks are evidence of the country's links with "Islamic extremist groups" trying to the Syrian government.
Israel declined to confirm the attack so as not to pressure Syrian President Bashar al-Assad into serious retaliation, according to a confidant of Benjamin Netanyahu, Israeli prime minister.
Sunday's attack is the third Israeli assault this year on Syrian soil.
On the same day, Israel deployed two batteries of its Iron Dome rocket defence system to the north of the country. It described the move as part of "ongoing situational assessments".