Speaking during a meeting with high-ranking political and military figures, Khamenei added: "The American president says he attacked Syria to fight against chemical weapons".
Iran on Saturday strongly condemned a joint airstrike by the U.S., Britain and France against Syrian regime's chemical sites in the wake of a suspected chemical attack that killed dozens outside the capital Damascus.
Calling it a "proportional" attack, McKenzie said Saturday the strikes destroyed "fundamental components" of Syria's chemical weapons infrastructure and "dealt them a severe blow".
Asked whether Israel helped choose targets, the official, who spoke on condition of anonymity, said: "Not to my knowledge".
"A combined operation with the armed forces of France and the United Kingdom is now under way". In Damascus, the president's seat of power, hundreds of residents gathered in Omayyad Square, many waving Syrian, Russian and Iranian flags.
Speaking to Fox News, the founder of the National Security Institute claimed it was time Russian Federation and Iran paid the price for supporting Syrian President Assad's regime following a series of US-UK-French military strikes aimed at the Syrian government forces on Saturday.
In a sign of mounting regional tensions, seven Iranians were killed in an air strike on a Syrian military base on Monday, which Iran said was carried out by Israel.
"Russia condemns in the strongest possible terms the attack against Syria, where Russian military personnel are assisting the legitimate government in its counterterrorism efforts", Putin said in a statement.
"It was a heavy strike", Mattis said of the attack on Assad's chemical weapons facilities.
Marine Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, said there was some "activity" by Syrian surface-to-air missiles, but there were no reports of US or allied casualties.
Bucci believes the retaliation has the potential to force Assad to forgo the use of chemical weapons.
The Israeli military said the drone was based on the Lockheed Martin RQ-170 Sentinel, which Iran intercepted during what the U.S. called a reconnaissance mission in December 2011. The first air strike ordered by Trump occurred in April a year ago.
Ali Shirazi, liaison for Iran's Supreme Leader Ayatollah Ali Khamenei to the elite Quds Force, threatened that Tehran will destroy Israel if it doesn't stop its "childish game".