U.N. Chief Antonio Guterres said Friday the first team of global chemical weapons investigators have arrived in Syria and the second team is due to arrive Friday or Saturday.
The use of chemical weapons against civilians in Syria has sparked a diplomatic incident, as Trump's airstrikes has him squaring up to the Putin-supported Assad regime.
"We know who did this".
"If there is a strike by the Americans", Zasypkin said, "the missiles will be downed and even the sources from which the missiles were fired".
After Mr Trump's tweet, Russian Federation repeated its suggestions that the West had staged the chemical attack as a pretext for military intervention.
Moscow strongly warned against any strikes and threatened to retaliate.
Victims of Sunday's chemical weapons attack in Douma, Syria. The statement said none of the patients had any symptoms of chemical poisoning.
Konashenkov said Friday that Britain was "directly involved in the provocation", but didn't elaborate or provide evidence.
He asked U.N. Secretary General Antonio Guterres to call an open meeting of the U.N. Security Council for Friday. Could this be the start of a new Cold War?
He cited the Palestinian-Israeli divide, the Sunni-Shiite divide "evident from the Gulf to the Mediterranean", and other divisive factors reflected in a multiplicity of conflicts.
French president Emmanuel Macron said that his country would make the decision to strike Syria in coordination with Britain and the United States in days.
The American president also criticized Russian Federation for its support of Syrian leader Bashar Assad, saying "you shouldn't be partners with a Gas Killing Animal who kills his people and enjoys it!'"
Western powers are thought to be preparing for strikes but Syria's ally Russian Federation opposes such action, the BBC reported on Friday.
After Deadly Storms, Agency Retires 4 Hurricane Names
Irma - a Category 5 storm, the strongest designation, wrecked havoc on Caribbean islands; Barbuda was nearly completely destroyed. If more than 21 storms form in one season, like in 2005, the Greek alphabet is used to name the additional storms.
Putin urged a thorough investigation and warned against baseless accusations.
"But should the United States and our allies decide to act in Syria, it will be in defense of a principle on which we all agree", Haley told the U.N. Security Council.
Macron also said his country, the USA and Britain would decide how to respond in the coming days.
A senior official in a pro-Assad regional alliance told Reuters that "all military bases were evacuated a few days ago" after an early warning from Russian Federation about the strikes.
US Ambassador Nikki Haley said the use of chemical weapons in Syria threatens world peace and that Russian Federation is responsible.
Russian Federation denies its Syrian allies used chlorine or other agents in the Saturday attack that claimed dozens of lives.
Washington, Paris and London have nevertheless insisted that their own secret intelligence points to Assad´s guilt, and on Friday, a USA spokeswoman said they had "proof". Erdogan did not elaborate.
Therefore, U.S. officials have said they want a more sustained strike that would hit more facilities and cut off the military for more than one day.
The Eurocontrol airspace organization said that the European Aviation Safety Agency had sent a "Rapid Alert Notification" that flight operators needed to consider the possibility of air or missile strikes into Syria.
Albania's Foreign Ministry said Le Drian canceled a trip there planned Friday "due to worldwide developments in the security field". Syria's government denies responsibility.
Russia's Foreign Ministry responded by saying "smart" missiles would destroy evidence of a chemical attack.
She declined to say if MPs would get a vote on any military action. He was referring to the three countries' efforts to reduce violence in Syria.
A year later, Trump finds himself again weighing his response to a suspected poison gas attack by Assad's forces, this time in the town of Douma last weekend.
The envoy argued the accusations that Damascus dropped chemical munitions on a rebel-held town in Eastern Ghouta last week were fabricated to justify strikes and added that Russian Federation had long warned of the scenario.
French Defense Minister Florence Parly said the Russians were warned "ahead of time" - despite claims from the Pentagon that Moscow was not notified. He didn't elaborate or name the state.