The assessment notes eight chlorine attacks ahead of the "major attack" on Douma and 44 allegations of chemical weapons use in Syria over the past year.
US President Donald Trump, along with British Prime Minister Theresa May and French President Emmanuel Macron authorised precision air-launched cruise missile strikes against Syria on Saturday to degrade its chemical weapons capability, saying there was no alternative to military action.
Iranian President Hassan Rouhani warned on Saturday that a US -led missile attack on Syria would lead to destruction in the Middle East, the semi-official Tasnim news agency reported. They are crimes of a monster instead.
Berman, they added, "can prevent further disparity in Mr. Atilla's treatment" by taking into account the leniency afforded those banks and their employees, both United States and non-US citizens, who violated sanctions. The White House said he would consult further with allies.
"Trump is also offering prayers for the Middle East and for the United States".
"Why would the victor use a chemical substance?"
The attacks were described by the Pentagon as precise and aimed exclusively at the regime's chemical weapons facilities.
But Trump says America does not seek "an indefinite presence" in Syria and will look to pull out its troops once the Islamic State is totally defeated.
European Council President Donald Tusk said on Twitter that the European Union supported the strikes and "will stand with our allies on the side of justice".
The Kremlin on Saturday condemned Western air strikes on Syria where its armed forces are backing President Bashar al-Assad.
"Last year, [US] President [Donald] Trump made it clear that using chemical weapons crossed a red line". The latest occurred on April 9, when two Israeli Air Force F-15 jets conducted a strike against the T-4 military facility in the east of Homs province from Lebanese airspace, according to the Russian Defense Ministry.
He added that "those responsible must be held accountable".
The Assad regime moved its aircraft and some military equipment inside Russian bases for protection, but what about the Iranians? "Insulting the President of Russian Federation is unacceptable and inadmissible", he added.
Mattis also said that any strike would not represent a shift in US strategy in Syria, which is aimed at defeating the Islamic State, also known as ISIS.