The Assad regime murdered hundreds of thousands of people so far and forcefully displaced millions of people.
"First of all, we are committed to ending that war through the Geneva process and the UN-orchestrated effort".
French President Emmanuel Macron said Thursday he had proof that Syrian President Bashar al-Assad's government was behind chlorine attacks in recent days.
Ziad Majed, political scientist at the American University of Paris, said: "If the strikes are large-scale and the Russians understand that the West is steadfast. there may be a political dynamic to find a compromise".
US President Donald Trump has taken a step back on comments he made about a possible attack on Syria, saying an attack could take place "very soon or not so soon at all".
Later Thursday he was noncommittal. "We will not sacrifice the international order that we have collectively to the Russian desire to protect its ally at all costs".
Bashar Jaafari, Syria's ambassador to the UN, echoed Nebenzia's statements, saying that the US was responsible for creating "a big elephant of lies and deceit", aimed at justifying an attack on Syria.
Russian foreign minister Sergey Lavrov said Russian experts have inspected the site of the alleged attack in Douma, just east of Damascus, and found no trace of chemical weapons.
The United Nations calls the deals that ended the violence in Eastern Ghouta as the "biggest mass evacuation of the Syrian conflict". Russiatold the United States and its allies not to carry out any military strike.
"Our relationship with Russia is worse now than it has ever been, and that includes the Cold War".
"So he's doing the exact same thing that he criticized his predecessors for doing".
US ambassador to the UN Nikki Haley said: "The world must see justice done".
"President Trump has warned via tweet that 'missiles will be coming' to Syria to enforce the norm against using chemical weapons", she says. "Not only the business of chemical warfare but mass homicide'".
According toThe Guardian, the US, UK and France are already making plans for strikes in Syria that are "intended to punish" the Assad regime following a suspected chemical weapons attack on civilians.
Asked about the risks of US military retaliation, Mattis cited two concerns, starting with avoiding civilian casualties. Russia is a growing military power, but it is a global actor losing blood in terms of the economy.
Russian electronic warfare tactics have been observed in past war zones like Ukraine and have recently shown signs of getting more advanced.
A fact-finding mission from the Organisation for the Prohibition of Chemical Weapons is expected to head to Douma.
President Donald Trump tweeted Wednesday that missiles "will be coming".
On Monday, Trump vowed during a Cabinet meeting at the White House that the United States would make "some major decisions over the next 24 to 48 hours" on how to respond to a suspected chemical attack in Syria over the weekend, which he called "atrocious".
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