The Syrian government of President Bashar Assad has invited international inspectors to send a team to Syria to investigate an alleged chemical attack in the town of Douma in a move apparently aimed at averting possible Western military action over the incident.
"Syria is keen on cooperating with the OPCW to uncover the truth behind the allegations that some Western sides have been advertising to justify their aggressive intentions," state news agency SANA said, quoting an official Foreign Ministry source.
In Moscow, Russian Foreign Minister Sergei Lavrov said the Kremlin would submit a resolution to the U.N. Security Council proposing that the OPCW investigate the alleged attack.
U.S. President Donald Trump Monday warned of a quick, forceful response once responsibility was established. The White House said Trump will now not travel on Friday to the Summit of the Americas in Peru so that he can focus on the crisis.
At least 60 people were killed and more than 1,000 injured in Saturday's suspected attack on Douma, then still occupied by rebel forces, according to a Syrian relief group.
The Syrian government and Russia said there was no evidence that a gas attack had taken place and the claim was bogus. But the incident has thrust Syria's seven-year-old conflict back to the forefront of international concern.
Adding to the volatile situation, Iran, Assad's main ally along with Russia, threatened to respond to an airstrike on a Syrian military base Monday that Tehran, Damascus and Moscow have blamed on Israel.
Meanwhile on the ground, thousands of militants and their families arrived in opposition-held northwestern Syria after surrendering Douma to government forces. The evacuation deal restores Assad's control over the entire eastern Ghouta, formerly the biggest anti-government bastion near Damascus.
The Hague-based Organisation for the Prohibition of Chemical Weapons (OPCW) is already at work trying to establish what exactly took place in Douma.
But whether a team would try to get there was unclear. OPCW inspectors have been attacked on two previous missions to the sites of chemical weapons attacks in Syria.