According to Russia's Defense Ministry, the US State Department has finally admitted that the infamous Al Nusra Front, which controls Syria's Idlib Governorate through the umbrella terrorist group HTS and is still thought to be a front for al-Qaeda, "not only has, but uses chemical weapons against civilians."

"The Hayat Tahrir al-Sham terrorist group (HTS), linked to Jabhat al-Nusra, which uses 'small and heavy arms, improvised explosive devices, and chemical weapons', operates in that province [Idlib]. This is the first official recognition by the [US] State Department not simply of the presence, but, I emphasize, the use of chemical weapons by Jabhat al-Nusra terrorists in that part of Syria to commit terrorist attacks, about which we repeatedly warned," Russian Defense Ministry spokesman Maj. Gen. Konashenkov said.

Igor Konashenkov also recalled that in Idlib province, "only one case of the use of chemical weapons is known — in Khan-Sheikhun."

READ MORE: Russia: US Has Not Provided Proof of Assad's Guilt in Syrian Chemical Attacks

"However, the US accused government troops of [conducting] this chemical attack. And those who [actually] organized it, they called a "moderate opposition," Konashenkov said.

Igor Konashenkov stressed that "as for the alleged Russian Air Force bombing in the city of Idlib, the State Department here is mistaken and American citizens have nothing to fear. The Russian aircraft operating in Syria does not strike settlements, in contrast to the US and the coalition ."

On April 4, the Syrian opposition reported that 80 had been killed in a chemical weapons attack in the city of Khan-Sheikhun in Idlib province, and 200 were wounded. They accused Syrian government troops of conducting this attack, who in response strongly rejected the accusations and blamed the militants.

The war in Syria started in 2011. Four years later, in September 2015, Russia launched a military operation to assist the country's government, providing air support to Syrian forces in fighting Daesh and other terrorist groups.

Meanwhile, the US-led coalition conducts air strikes as well as ground and rocket artillery fire against the terrorist group Daesh (ISIS) in Syria, although this activity hasn't been sanctioned by the government of President Bashar Assad or the UN Security Council.