The enclave has been under rebel control since mid-2013. That attack, she said, came in response to a chemical attack in the Syrian city of Khan Shaykhun. Syria's Al-Ikhbariya TV showed cars, trucks and tractors loaded with civilians driving out of the town.
The official media outlets in Syria accuse the rebels of preventing the civilians from leaving.
The commander said that the plant, which consists of a two-story building with a basement located between Douma and al-Shefounieh, and that it included a lab for making toxic chemicals containing equipment of Saudi origin and materials and protection gear of Western origin.
More than 19,800 children are among the dead, it said. Blasts could be heard as he spoke to The Associated Press via a messaging service. "And I think President Trump made that very clear early in his administration".
"We have heard hints of that in the statements of some delegations today", Nebenzia said.
Turkey considers the Syrian Kurdish militia group to be "terrorists" while the USA has relied on the group in the fight against the Islamic State group. "Their families will never forgive them if they leave", he said.
The rebel group said in a statement that an agreement has been reached with Russians to allow the United Nations to evacuate wounded people out of Eastern Ghouta for medical treatment.
On Monday, the group had announced that it would treat people outside of eastern Ghouta through an agreement "via the United Nations with Russian Federation". United Nations spokesman Stephane Dujarric told reporters there are plans to send another humanitarian convoy to Douma "in the coming days". Aid supplies reach the besieged community in Eastern Ghouta for the first time in weeks and after months of bombardment.More news: South Jersey teen moves on to next round on ABC's 'American Idol'
Four major rebel groups are now positioned inside Eastern Ghouta, namely the Islam Army, Failaq al-Rahman, Ahrar al-Sham, and the Levant Liberation Committee, known as the al-Qaida-linked Nusra Front.
The U.S. ambassador to the United Nations is warning Syria that the United States is prepared to take military action again for chemical attacks that are killing and wounding Syrian civilians.
Hamzeh Hassan, a local physician, said he treated four people in the town of Arbeen with wounds from suspected incendiary bombs that left deep burns.
"I'm so happy to be out but I'm also sad because I can't get in touch with my daughter who gave birth", she said, as she wiped tears from her pale cheeks.
A spokesman for a medical charity said the isolation meant that Harasta and another cut-off pocket have not been able to send patients out in the evacuation.
Several hundred Islamist fighters evacuated the Qadam district south of Damascus on Tuesday under such an agreement.
Rebels have repeatedly denied they have been in talks which could see fighters and their families bussed to opposition-held Idlib province in the north-west as part of an amnesty deal similar to Aleppo and Daraya.
Al-Qadam is surrounded by government-held territory on one side and Islamic State-controlled neighbourhoods on the other. The CMM says the army launched raids on IS-held areas in Yarmouk and Hajar al-Aswad.