Trump says he has asked USA partners "to take greater responsibility for securing their home region, including contributing large amounts of money for the resources, equipment and all of the anti-ISIS effort".
Qatar was the first Gulf country to react. "These are not the actions of a man; they are crimes of a monster instead", Trump said.
The European Union on Saturday warned of fresh economic sanctions, should Syria continue to use chemical weapons.
Associated Press reporters in Damascus saw smoke rising from east Damascus early Saturday morning local time.
Canadian Prime Minister Justin has also expressed his support for punitive strikes carried out by the US, Britain and France against Syrian President Bashar al-Assad's regime.
On Monday, seven Iranian personnel were among 14 people killed in an early morning strike on the T-4 airbase in Syria, with regime allies Iran and Russian Federation blaming Israel for the attack.
Missile fire lights up the Damascus sky, April 14, 2018.
Neither Washington nor Moscow want to see an escalation of the overall long-running conflict in Syria, say analysts.
Despite Iran's claim that its presence in Syria is at the request of the official government, in fact it depends more on what Russian Federation wants. Trump asked in his address before ordering the airstrike on Syriam chemical weapons sites.
Trump announced the strikes, in coordination with France and Britain, from the White House Friday night.
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Speaking via satellite link Friday to supporters in Beirut, Nasrallah also called the alleged chemical weapons attack in Douma "theater".
Public anger and objections to Iran's presence in Syria, and people's frustration with a collapsing economy, turned into protests in January. Dunford said "normal deconfliction channel was used to deconflict airspace" with Moscow, but that the United States did not share with Russian Federation what sites would be targeted.
"Last year, [US] President [Donald] Trump made it clear that using chemical weapons crossed a red line". The first air strike ordered by Trump occurred in April past year.
The official spoke anonymously according to protocol.
The Security Council's lack of resolve to act has given Iran and the Houthi militias the green light to commit atrocities in Yemen, the letter said.
He added that "those responsible must be held accountable".
Damascus is seen as the US launches an attack on Syria targeting different parts of the capital early Saturday, April 14, 2018.
The Iranian drone is eerily similar to a United States drone that Iran captured in 2011.
The U.S. has said the strikes targeted a research center in greater Damascus, a chemical weapons storage facility and another storage facility and command center, both in Homs.
