The U.S., France and Britain have been in extensive consultations about launching a military strike as early as the end of this week, U.S. officials have said.
"I think that, when you look back at President Obama sending the United States troops into Syria at the time he did, he also had to deal with this type of situation, because we are going after a named terrorist group that was not actually named in the AUMF that put them in", he said.
"To Iran and to Russian Federation I ask: What kind of a nation wants to be associated with the mass murder of innocent men, women and children?" he said.
This is the second time in over a year that the USA has taken military action in Syria.
The Syria crisis has come as a test for not only Trump, but incoming National Security Adviser John Bolton, a hawk who joined Trump's team this week. Located by officials of the Russian Ministry of Defense, one of the doctors, Jalil Ashizh, said that after a building in the city was bombed on the first floors, a fire broke out.
Syria said its air defenses were "confronting the U.S. -French-British aggression", according to the state-run SANA news agency.
Iran's Foreign Ministry on Saturday condemned the US-led attacks on Syria and said Washington and its allies would bear responsibility for the consequences in the region and beyond, state media said. Vassily Nebenzia, Moscow's ambassador to the United Nations, said he "cannot exclude" war between the USA and Russian Federation.
Bolton has called the Syrian civil war a "sideshow" and said he is much more concerned about Iran's role there than about whether Assad remains in power.More news: With Russia on his mind, Trump looks for tougher approach on Syria
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On Thursday, Russia's military said Douma has been brought under full control of the Syrian government under a Russia-mediated deal that secured the evacuation of the rebels and thousands of civilians after it was recaptured by Syrian forces. It was not clear whether the presence of the investigators could affect the timing of any USA military action.
The United States has chose to strike Syria, Fox News reported on Friday, citing an administration official.
It also has warships and support vessels deployed in the Mediterranean.
Russian lawmakers have warned the United States that Moscow would view an airstrike on Syria as a war crime and that it could trigger a direct US-Russian military clash.
The US and Europe have both slapped sanctions on the Syrian Scientific Studied and Research Centre for its links to chemical weapons production in Syria. Satellite images shared by an Israeli firm showed Russian Federation has moved 11 of its vessels docked at Syria's Tartus naval base in the face of continued threats by the West over a suspected chemical attack which killed over 40 in Syria's Douma.
Trump said he has asked US 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".
Lavrov also hoped that there would be no repeat of the experience of Libya and Iraq in the Syria conflict.
"Eventually, he got exasperated", said a source familiar with the internal debate at the White house. Syria's capital has been rocked by loud explosions that lit up the sky with heavy smoke as U.S. President Donald Trump announced airstrikes in retaliation for the country's alleged use of chemical weapons. It's an endeavor that is projected to cost at least $100 billion and take at least 10 years to complete.