Last year's chemical weapons attack killed dozens civilians, as did this one.
Yaman Al-Quadri, a Syrian refugee who fled to Canada after being detained by government of Syrian president Bashar Assad for a month shortly after the start of the uprising in March, 2011, called the experience of watching her people suffer through chemical attacks at the hands of the military "an emotional rollercoaster".
"The evil and the despicable attack left mothers and fathers, infants and children, thrashing in pain and gasping for air". They come from nerve agents. On Saturday, Putin reaffirmed Russia's view that a purported chemical attack in the Syrian town of Douma that prompted the strike was a fake.
Mr Trudeau says it was "unfortunate it was required to take direct military actions to degrade the use of chemical weapons by the murderous Assad regime". The vessels were located in the Red Sea, the Gulf and the eastern Mediterranean.
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.
Russia's ambassador, Vasily A. Nebenzia, added that the airstrikes, carried out by the U.S.as well as the United Kingdom and France, amounted to "aggression against a sovereign state" without allowing the U.N.to investigate the suspected poison gas attack.
As images of sick or dying children flooded global media all week, the USA guided-missile destroyer USS Winston Churchill was en route to the Mediterranean to join a flotilla of allied warships, including another US destroyer, the USS Donald Cook.
Pentagon officials anxious that the airstrikes might lead to an accidental release of toxic chemical agents.
Lt. Gen. Kenneth McKenzie, director of the Joint Staff, said that none of the aircraft or missiles involved in this operation were successfully engaged by Syrian air defenses, and there is no indication that Russian Federation air defense systems were employed.
Russia had promised to respond to any attack on its ally, but the Pentagon said no Russian air defence systems were used.
Jim Mattis and Joseph Dunford at the Pentagon on April 13. Dunford said missiles first struck a scientific research center in the Damascus area that he said was a center of Syrian research, development, production and testing of chemical and biological warfare technology.
In addition, a storage facility was the target of 22 weapons launched by all coalition forces, and a bunker facility was the target of seven Scout missiles. One facility targeted is in the capital of Damascus, while two others are near Homs, close to the border with Lebanon.
Nato Secretary General Jens Stoltenberg tweeted a message of support and said those who use chemical weapons "must be held accountable".
Whether or not that happens is up to Syria and also Russian Federation, the officials said.
"The Syrian response was remarkably ineffective", McKenzie said. "This is not about intervening in a civil war". French President Emmanuel Macron said in a statement that a target of the strike was the Syrian government's "clandestine chemical arsenal".
The joint strikes were a "flagrant and undeniable crime" by the three countries and proved "their disgraceful defeat in supporting Takfiri terrorists" and saving them, it added.
Last year, the U-S launched cruise missiles after Assad used sarin gas on civilians.
"Last year, the focus was on the delivery", Pentagon spokeswoman Dana White said Saturday.
The U.S. and its European allies launched precision air strikes in Syria early Saturday morning.
Retired Lt. Gen. Yevgeny Buzhinsky, the former chief of the Russian Defense Ministry's worldwide department, warned that Russia has thousands of military advisers in Syria "practically in every battalion", and a strike on any Syrian facility could jeopardize their lives.
"A pre-designed scenario is being implemented", Russian Ambassador Anatoly Antonov said on Twitter.
Vice President Mike Pence, in Peru for a meeting of regional leaders, said "there will be a price to pay" involving military force if Syrian chemical weapons are used again.
1 NEWS NOW is covering the aftermath of the US-led air strikes carried out in Syria in response to chemical weapons attacks in Douma.
President Bashar al-Assad has been in power in Syria since 2000. But Trump's envoy to the UN, Nikki Haley, said that United States forces remain "locked and loaded" for additional action, should Assad continue deploying chemical arms.
While American President Donald Trump has called Friday's airstrikes against the Syrian military a success, members of that country's diaspora are calling the lack of follow-up a disappointment.
"Chemical weapons are a threat to us all", Haley later added. In his nationwide address, Trump stressed that he has no interest in a longtime fight with Syria.
"I'm not going to say that they're going to be unable to continue to conduct a chemical attack in the future, but I suspect that they'll think long and hard about it based on the activities of last night", the lieutenant general said. "And great warriors they are".
Russian and Syrian forces- which deny involvement in the April 7 event- have since taken control of Douma, and are denying access to the site for global chemical weapons inspectors. But they haven't - so far at least.