Kremlin’s spokesman said that Washington is refusing to accept the reality on Douma attack.

“You see the unconstructive position that some countries including the US have taken. They are a priori refusing to face reality,” Kremlin’s spokesman Dmitry Peskov told journalists on Tuesday.

“None of them is talking about the need for an unbiased investigation,” Kremlin’s spokesman added.

Earlier, Russia’s president warned against any recourse to provocative measures the alleged attack, amid rising threats of a military action by the US and its allies against the Damascus government, which they blame for the reported incident.

In a phone call on Monday, Putin and German Chancellor Angela Merkel discussed the situation in Syria, “including the accusations against Damascus by a number of Western countries of using chemical weapons,” the Kremlin said in a statement.

The alleged attack on the militant-held town of Douma in the Eastern Ghouta suburb of the Syrian capital over the weekend left dozens dead and drew international condemnation from various countries and international bodies.

The Syrian government, in a statement released late on Saturday, strongly rejected the allegation of using chemical munitions and said that the so-called Jaish al-Islam Takfiri terrorist group, which has dominant presence in Douma, was repeating the allegations “in order to accuse the Syrian Arab army, in a blatant attempt to hinder the Army’s advance.”

The allegations against the Syrian government have been flying around as Damascus and its ally Moscow are within an inch of defeating foreign-backed militants in Douma, their last stronghold in Eastern Ghouta.

The militants have been using the civilians there as human shields and launching deadly rocket attacks against the capital from the countryside.

In the course of the liberation operation in Eastern Ghouta, which began in February, Moscow has repeatedly warned that the militants in the region could stage gas attacks in a bid to frame the Syrian government.