Beirut, Moscow- Russian and Syrian regime warplanes launched on Tuesday a number of airstrikes on several areas in the provinces of Idlib and Hama, as a response to a previous attack waged by Hay’at Tahrir al-Sham that includes Fatah al-Sham faction.

Last week, Russia, Iran, and Turkey, known as the guarantors of the peace talks in Astana have agreed to establish four de-escalation zones in Syria and to deploy 1,500 monitors along the border of Idlib, parts of Hama, Latakia, and Aleppo, to prevent any clashes between regime forces and opposition groups.

However, the Syrian Observatory for Human Rights reported on Tuesday that Hay’at Tahrir al-Sham launched an attack that targeted regime forces positions in the northeastern countryside of Hama.

“Fierce battles erupted at the administrative border between the two provinces of Idlib and Hama, killing 12 militants from Hay’at Tahrir al-Sham and 19 members from the Syrian regime forces and their allied armed men,” the Observatory said.

It added that Russian warplanes directly targeted on Tuesday four medical institutions including the Obstetric Hospital in al-Tah town, Al-Rahma medical point of Khan Shaykhun, the vicinity of a hospital in Kafr Nabl and a medical point in the nearby Marzetta town.

The strikes also hit several civil defense positions in areas controlled by the factions.

Meanwhile, the Russian Defense Ministry announced on Tuesday that regime forces were being attacked by US-led Syrian Democratic Forces (SDF) militants.

“According to the reports of the Syrian Army commanders, the most vicious counterattacks and massive shelling are launched by the SDF,” the Russian Defense Ministry’s spokesman, Major General Igor Konashenkov, said.

He added that “If the US-led coalition does not want to fight terrorism in Syria, it should at least be out of the way and not prevent those who really do that consistently and effectively.”