Mattis disclosed that the USA had not yet confirmed that the most recent suspected Syrian chemical weapons attack, on April 7 in the Damascus suburb of Douma, included the use of sarin gas.
Asked if the strikes had also been a warning to Russian Federation, the PM said: "The action that took place last night was an action which was focused on degrading and deterring the operational capability and the willingness of the Syrian regime to continue to use chemical weapons".
- Mr Mattis and General Joseph Dunford said there were no reports of any allied losses. He said the targets were "selected. carefully to minimize the risk to innocent civilians" and that he was unaware of any civilian casualties from the operation.
Russia's ambassador to the USA responded by saying the attack on its ally "will not be left without consequences".
The US president claimed that the joint action was meant to establish a "strong deterrent" against the production, spread, and use of chemical weapons.
"The attack took place after the colonial forces supporting terrorists realized they have lost control got the feeling that they have lost credibility in front of their people and the world", Assad said. "They are crimes of a monster instead".
They continued saying that there was "no indication Russian air defense systems were employed", and that they have "not seen any military response from actors in Syria since the western strikes".
Trump chastised Syria's two main allies, Russia and Iran, for their roles in supporting "murderous dictators", and noted that Russian President Vladimir Putin had guaranteed a 2013 worldwide agreement for Assad to get rid of all of his chemical weapons.
She declined to say whether Bashar al-Assad should stay in power and said talks with allies would continue on finding a political solution to the civil war.
"To Iran and to Russian Federation, I ask, what kind of a nation wants to be associated with the mass murder of innocent men, women and children?"
The president speaks from the White House Diplomatic Room. "No nation can succeed in the long run by promoting rogue states, brutal tyrants, and murderous dictators", Trump said.
However, the Syrian Information Ministry refuted what the Western media presented as USA striking 9 targets, and called on the Syrian people not to pay attention to those media reports aimed at magnifying attack.
"The three aggressors preempted the OPCW's mission in Ghouta, with the aim of hiding their lie", SANA said on Saturday. "In the battle of Iraq, the United States and our allies have prevailed". "There won't be anything, or anyone, even close", Donald Trump tweeted on Saturday. It was done on targets that we believed were selected to hurt the chemical weapons program.