Negotiations meanwhile were continuing at the Security Council on a draft resolution demanding a 30-day ceasefire to allow for urgent deliveries of humanitarian aid and medical evacuations.
At least one civilian was killed and another six injured in mortar strikes on eastern neighborhoods of Damascus on Wednesday, reported local news outlet Mortar Diaries, which tracks rebel shelling on the Syrian capital.
"These are groundless accusations, we don't know what they are based on, Kremlin spokesman Dmitry Peskov said, when asked about Western assertions that Russian Federation was to blame for some of the deaths in eastern Ghouta.
They are responsible for the attacks, for the dire humanitarian situation in east Ghouta, and for the horrendous civilian death toll", Nauert said.More news: Tessa Virtue and Scott Moir capture Olympic ice dance gold
"Maybe every minute we have 10 or 20 air strikes", Dr Bassam said. France, a permanent member of the U.N. Security Council, described the bombardment as a serious violation of global humanitarian law.
War monitors say 38 more people have been killed in relentless bombing of rebel-held Eastern Ghouta, bringing the total to more than 310 people killed in the district since Sunday night. "The Assad regime's siege and starve tactics are. adding to the humanitarian disaster there", she alleged, urging Russian Federation to stop supporting the Syrian government.
"The Syrian government is attacking all areas with all kinds of weapons - known and unknown weapons", Siraj Mahmoud, head of media for the White Helmets civil defense rescue force, which operates in rebel-held areas in Syria, told ABC News.
The UN human rights office said in a statement that at least 346 people have been killed in the suburb since the Syrian government escalated their offensive on February 4.
Amnesty International said "flagrant war crimes" were being committed on an "epic scale" there, and the United Nations children's agency UNICEF published a blank statement, saying in a footnote there were "no words" to describe the suffering of children.More news: US beats Slovakia 5-1, will play Czechs in Olympic quarterfinals
"I remind all parties that attacks against medical facilities is prohibited under global humanitarian law (IHL)", Moumtzis said in the statement.
Tarakji is president of the Syrian American Medical Society, which has teams working in eastern Ghouta.
Eight medical facilities have been bombed and put out of operation in the past 48 hours, according to the Union of Medical Care and Relief Organisations (UOSSM), which has operatives in the enclave, one of whom died on Tuesday in the assault. He added that the nightmare in East Ghouta has to end and must end now.More news: Israel's Netanyahu attacks Iran