“Of course, we are not going to justify ourselves before anyone. Our fundamental position on Syria is well known,” the Russian Foreign Ministry said in a Thursday statement.

“At the same time, a number of capitals, including Riyadh, unfortunately are not ashamed of employing all sorts of methods and contacts, including by financing and arming international terrorists and extremists,” the statement said.

“Such actions must really be stopped,” the Russian ministry stressed.

Moscow’s angry Thursday statement came in response to accusations by Prince Saud al-Faisal, the Saudi foreign minister, that Russia was responsible for mass killings in Syria because of its military support for the Syrian government.

Saudi Arabia has provided the Takfiri militants operating inside Syria with Russian-made Konkurs anti-tank missiles.

According to a recent report released by the Daily Telegraph, militant sources said they had received the first batch of the heavy weaponry from Saudi Arabia in Aleppo.

The sources said that more arms, including higher-end missiles, would be sent to the militants later.

Meanwhile, a June 26 report by the Wall Street Journal said the US Central Intelligence Agency (CIA) has begun transferring weapons to Jordan in order to arm groups of foreign-backed militants fighting against the Syrian government.

The unrest in Syria erupted over two years ago and many people, including large numbers of Syrian soldiers and security personnel, have been killed in the violence.

Damascus says the chaos is being orchestrated from outside the country, and there are reports that a very large number of the militants fighting in Syria are foreign nationals.

In an interview broadcast on Turkish television in April, Syrian President Bashar al-Assad said that if the militants take power in Syria, they could destabilize the entire Middle East region for decades.