Syria war: At least 70 killed in suspected chemical attack in Douma

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At least 70 people have died in a suspected chemical attack in Douma, the last rebel-held town in Syria's Eastern Ghouta, rescuers and medics say.
Volunteer rescue force the White Helmets tweeted graphic images showing several bodies in basements. It said the deaths were likely to rise.
There has been no independent verification of the reports.
Syria's government has called the allegations of a chemical attack a "fabrication".
The US state department said reports suggested "a potentially high number of casualties", including families in shelters.
It said Russia - with its "unwavering support" for Syria's government - "ultimately bears responsibility" for the alleged attacks.
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"The regime's history of using chemical weapons against its own people is not in dispute," it said in a statement.
What do we know about the attack?
Several medical, monitoring and activist groups reported details of a chemical attack, but figures vary and what happened is still becoming clear.
"Seventy people suffocated to death and hundreds are still suffocating," said Raed al-Saleh, head of the White Helmets. An earlier, now deleted tweet, put the figure at more than 150.
The pro-opposition Ghouta Media Center tweeted that more than 75 people had "suffocated", while a further 1,000 people had suffered the effects of the alleged attack.
It blamed a barrel bomb allegedly dropped by a helicopter which it said contained Sarin, a toxic nerve agent.
The Union of Medical Relief Organizations, a US-based charity that works with Syrian hospitals, told the BBC the Damascus Rural Specialty Hospital had confirmed 70 deaths.
Image caption
Pro-government forces are fighting to drive rebels out of Douma
A spokeswoman said reports on the ground suggested a much higher number of around 180 dead, but that it was hard to reach victims due to continuous shelling and the time of night.
She said there were reports of people being treated for symptoms including convulsions and foaming of the mouth, consistent with nerve or mixed nerve and chlorine gas exposure.
As the allegations emerged, Syria's state news agency Sana said the reports were invented by the Jaish al-Islam rebels who remain in control in Douma.
"Jaish al-Islam terrorists are in a state of collapse and their media outlets are [making] chemical attack fabrications in an exposed and failed attempt to obstruct advances by the Syrian Arab army," Sana said.
Has the Syrian government used chemical attacks before?
In August 2013, rockets containing the nerve agent Sarin were fired at rebel-held areas of the Eastern Ghouta, killing hundreds of people.
A UN mission confirmed the use of Sarin, but it was not asked to state who was responsible. Western powers said only Syrian government forces could have carried out the attack.
In April 2017, more than 80 people died in a Sarin attack on the opposition-held town of Khan Sheikhoun, and a joint inquiry by the UN and the Organization for the Prohibition of Chemical Weapons (OPCW) held the Syrian government responsible.