He criticised the United States and its allies for launching the strike without waiting for inspectors from the worldwide chemical weapons watchdog to visit the area. Moscow strongly warned against any strikes and threatened to retaliate.
"And what's most important is no one contests that the use of chemical weapons can not be tolerated and must be deterred", he said. The medics said none of the patients were hurt by chemicals.
London put "powerful pressure" on the civil defence organisation, Konashenkov said. It was not immediately clear if Russian-supplied interceptors were activated.
"A pre-designed scenario is being implemented", Russian Ambassador Anatoly Antonov said on Twitter.
According to NATO's disinformation monitors in Europe, they have seen a concerted effort by Russian Federation to deny the Douma attack took place. "We have irrefutable data that this was staged", Lavrov said.
He did not elaborate or name the state.More news: Commonwealth Games: England stun Australia to take last-gasp netball gold
Last month the Trump administration blamed Russian Federation for a campaign of cyber attacks that targeted the US power grid.
He called the alleged chemical attack in Douma a scripted play. The Syrian government has categorically denied the accusation. "There is broad-based worldwide support for the action we have taken", May said. Putin and Macron instructed their foreign and defense ministers to maintain close contact to "de-escalate the situation", the Kremlin said.
UN Secretary-General Antonio Guterres opened the Security Council meeting without referring to either Russian Federation or the United States, but stressed his deep concern that the growing tensions could spiral into broad conflict.
Guterres said "the Cold War is back - with a vengeance but with a difference", because safeguards that managed the risk of escalation in the past "no longer seem to be present".
"We can not take such risks".More news: Strong Winds and Rain for Monday
Britain has said there are no plans for future strikes against Syria, but Johnson warned Assad that all options would be considered if chemical weapons were used against Syrians again. Moscow alleged soon after the suspected April 7 attack that the images of the victims in Douma were fakes.
A child is treated in a hospital in Douma, eastern Ghouta in Syria, after what a Syria medical relief group claims was a suspected chemical attack.
"God forbid anything adventurous will be done in Syria following the Libyan and Iraqi experience", Mr Lavrov said.
The news caused the biggest daily stop in Russian equity ETFs in several years, while Russia's RTS index suffered an 11% fall in one day following the news, according to Bloomberg.
Syrian President Bashar al-Assad's regime is suspected of carrying out a chemical weapons attack. The war and politics of Syria are broadly going its way. They are expected to start their investigations into the Douma incident on Saturday, the Netherlands-based agency said.
There was no word from Putin himself, though Russian Foreign Minister Sergei Lavrov said Moscow was in contact with Washington to discuss an atmosphere which he described as alarming.More news: Is the Stock Safe to Invest? - Netflix Inc (NASDAQ: NFLX)
Syrian flags flew in Douma on Monday, security forces stood on street corners and Russian military police patrolled the streets.