Just after 4am Syrian local time (6:30 am in India) American forces, along with their allies United Kingdom and France, launched "precision strikes on targets associated with chemical weapons capabilities of Syrian dictator Bashar al-Assad".
Johnson said: "The world is united in its disgust for any use of chemical weapons, but especially against civilians".
France's aim was to deter Syria's government from using chemical weapons, she said, adding that her government did not want to exacerbate the conflict. Barzah is the location of a major Syrian scientific research center.
A chemical weapons equipment storage facility and command post near Homs.
The Pentagon said Saturday that a joint US-British-French operation against Syria's regime had "successfully hit every target", countering assertions from Russian Federation that dozens of missiles were intercepted.
No information has yet emerged regarding the number of casualties.
Witnesses told CNN that they heard explosions in the capital city of Damascus and that they began while Trump was making his address.
Trump said the USA was "prepared to sustain this response until the Syrian regime stops its use of prohibited chemical agents", however, he maintained that "America does not seek an indefinite presence in Syria".More news: Mexican leader, US VP Pence to meet over ties, NAFTA talks
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The prospect of Western military action in Syria that could lead to confrontation with Russian Federation hung over the Middle East on Friday but there was no clear sign that a USA -led attack was imminent. Defense Secretary Jim Mattis said there were no reports of USA losses in what he described as a heavy but carefully limited assault.
Iran also issued strong statements early Saturday condemning the strikes.
Part of the calculation this week has also been gaming out how Russian Federation will respond.
"We warned that such actions will not be left without consequences", he said.
Iran is the key backer alongside Russian Federation of the Syrian president, providing military advisors and "volunteer" ground forces.
"A large part of its chemical arsenal has been destroyed".
The attack also drew criticism from many of Trump's most ardent supporters in the US.
Tehran officials have said Western powers are using last week's alleged chemical attack on a rebel-held stronghold as an excuse to undermine the Syrian government's recent successes on the battlefield. "You shouldn't be partners with a Gas Killing Animal who kills his people and enjoys it!"
In his first reaction after military of the three countries carried out strikes against the chemical weapons infrastructure of Syria, Trump declared "Mission Accomplished".
Backing up its reasons for the air strikes, the foreign ministry released an intelligence report based largely on open sources which concluded that there was no other plausible explanation than a chemical attacked coordinated by the Syrian military.