Russia's ambassador to the United States on Friday warned that there would be consequences for the US -led military strikes on Syria, adding that it was not acceptable to insult Russia's president.
As worldwide chemical weapons experts travelled to Syria to investigate a suspected gas attack by government forces which killed dozens of people, French President Emmanuel Macron spoke to Russia's Vladimir Putin and expressed concern about a worsening situation.
According to Russian Federation, the reports of chemical attacks in Syria are part of a strategy created to justify foreign intervention.
A second USA official said targets were being carefully selected with the aim of damaging Assad's ability to conduct further gas attacks, while avoiding the risk of spreading poisonous fallout in civilian areas.
Russian currency and stock markets, preoccupied with the threat of US military action in Syria and the fallout from the new USA sanctions, did not react to the draft legislation. "Again, we are being threatened".
US intelligence shows a Russian claim that the attack was faked was false, Sanders said.
"We are continuing to assess intelligence and are engaged in conversations with our partners and allies", it said. "I can't go beyond that", Sanders told reporters.
On April 7, NGOs, including the White Helmets, said that chemical weapons were used in Douma, Eastern Ghouta.
Trump warned on Wednesday that missiles "will be coming" in response to the Douma incident.
President Trump: "Precision" strikes for Syrian chemical attacks
Policymakers in the Asia-Pacific region on Friday responded to the possibility of the US rejoining the trade deal with scepticism. Tighter trade links between the US and other Asian nations could give Trump a better hand in the brewing trade fight with China.
The air strikes, however, risk dragging the United States further into Syria's civil war, particularly if Russia, Iran and Ass opt to retaliate.
A first team of experts from global watchdog, the Organisation for the Prohibition of Chemical Weapons, has arrived in Syria, U.N. Secretary-General Antonio Guterres said.
Syria and its ally Russia have denied such an attack took place, and Moscow has accused Britain of helping to stage the Douma incident to stoke anti-Russian hysteria.
"God forbid anything adventurous will be done in Syria on the lines of the Libyan and Iraqi experience", he told a news conference, referring to Western interventions elsewhere in the region.
The Russian President, who backs Syrian President Bashar Al Assad, has called for an immediate United Nations Security Council meeting to what the Kremlin has called "an attack on Syria".
The capture of Douma from rebels who evacuated this week has clinched a major victory for Assad, crushing what was once a center of the insurgency near Damascus, and underlines his seemingly unassailable position in the war.
U.S. President Donald Trump announced the military action from the White House late on Friday. "This massacre was a significant escalation in a pattern of chemical weapons use by that very bad regime".
Trump made clear in his eight-minute television address that he is wary of a deeper entanglement in Syria, where about 2,000 USA troops have been deployed to fight Islamic State.