"The authoritarian Assad regime did not get the message last year as it was hit by American missiles after it carried out chemical weapons attack against its own people", Mattis said adding that it carried used chemical weapons again this year.
Syrian air defense forces targeted an Israeli F-16 fighter jet that was involved in the attack with over 25 anti-aircraft missiles.
Syria's foreign ministry on Saturday denounced Western strikes as a "brutal, barbaric aggression" hours after the US, France, and Britain launched a joint operation against military installations.
The European Union on Saturday warned of fresh economic sanctions, should Syria continue to use chemical weapons. "They are crimes of a monster instead", he said.
Iran, Russia and Syria have blamed Israel for the airstrike, which followed a suspected chemical attack on a rebel-held town near Damascus that killed dozens of civilians. A statement published by the official news agency expressed support for strikes to stop attacks by the Syrian regime against civilians.
"This is unprecedented in seven years: that Israel directly targets Iran's Revolutionary Guard", Nasrallah said.More news: Russian Trolls Increased '2000 Percent' After Syria Attack, Pentagon Says
The assertion comes after also a solid ally of Syria, Iran, this week jeopardized to respond to an airstrike to an military base which Russian Federation, the Syrian authorities and also Iran blamed Israel. She said speed was essential and that military action was in the national interest.
He stressed that missile strikes at Syria are "justified".
Asked who were the "chief financial beneficiaries" of the sanctions evasion scheme, prosecutors said, "First and foremost, the scheme benefited the Iranian government entities whose access to oil revenue and to the USA financial system was restricted under the sanctions laws".
Trump condemned Russian Federation and Iran for their ties to the regime, saying they are "most responsible for supporting, equipping and financing the criminal Assad regime". The first air strike ordered by Trump occurred in April previous year.
The attacks were described by the Pentagon as precise and aimed exclusively at the regime's chemical weapons facilities.
"Because the reality is, as the President said forthrightly to the American people, Russian Federation and Iran are part of the problem and they need to behave appropriately here".