JERUSALEM -- Syria's allies on Thursday condemned an Israeli airstrike a day earlier on a Syrian target, with Iran making a veiled threat to respond. Israeli analysts said, however, that the likelihood of retaliatory attacks was slim.
As Israeli officials voiced rising concern earlier this week about the security of Syria's chemical weapons, the military moved missile-defense batteries to northern Israel and anxious Israelis lined up at some gas-mask distribution centers. But Israeli authorities took no extraordinary measures to prepare for a possible response after Wednesday's airstrike, apparently calculating that the turmoil in Syria and Israel's military deterrence would discourage any hostilities.
Details of the attack remained murky, and the United States and Israel maintained a public silence in what analysts said was probably a calculated decision to reduce the prospect of retaliation. Western officials and a former Lebanese security official initially said the strike was carried out near Syria's border with Lebanon and possibly hit a truck ferrying weapons to Hezbollah militants in Lebanon, but Syria later announced that a defense research center near Damascus had been bombed.
The statement from Syria prompted allies to spring to its defense Thursday. Iran's deputy foreign minister, Hossein Amir-Abdollahian, was quoted by Iranian news agencies as warning Israel of "grave consequences" after the airstrike.
Hinting at possible retaliation, Amir-Abdollahian said Israel should not rely on its Iron Dome missile shield, which he said proved ineffective during Israel's military offensive in November against the militant Hamas group in the Gaza Strip. The system stopped scores of incoming rockets, but others struck southern Israeli cities and reached areas near Jerusalem and Tel Aviv.
Clinton speaks out
Russia, Syria's most powerful ally, said in a statement that if the strike is confirmed, "we have a case of unprovoked attacks on targets in the territory of a sovereign state, which grossly violates the U.N. charter and is unacceptable."
In Washington, outgoing Secretary of State Hillary Rodham Clinton declined to discuss the Israeli strike, but she said Iran and Russia were continuing -- and, in Iran's case, increasing -- their assistance to Syrian President Bashar Assad.