PHOTOS: Iranian air force compound in Syria destroyed after alleged Israeli airstrikes.
Russia, the US, Syria and Iran have all accused Israel of carrying out the attack on the Tiyas, or T-4, air base near Homs—something that Israel has not confirmed or denied.
At least seven Iranian “military advisers” were killed in the attack.
Ali Akbar Velayati, a senior adviser to Iran’s supreme leader threatened Israel with retribution over strike on the Iranian base in Syria.
Velayati called the attack an Israeli “crime”, and said that “will not remain unanswered”.
Iran is one of Assad’s strongest backers and has sent thousands of Iran-backed terrorists to back his army in the field.