It conveyed "uneasiness" to the Russian ambassador Tuesday, calling the strikes a "violation of the borders of the Idlib de-escalation zone" established by Turkey, Iran and Russia, according sources at the foreign ministry.
Syrian government's ongoing offensive in Idlib province will be a test for the alliance of Russia, Iran and Turkey, three regional powers that support different actors on the battlefield.
Lavrov noted that Moscow and Tehran have reached an important stage in preparation for implementing the initiative launched by Russia, Iran and Turkey to organize the Sochi Congress.
"Iran and Russian Federation should fulfil their responsibility". He told Anadolu news agency that ties between the North Atlantic Treaty Organisation allies could be damaged further if Washington does not correct its mistakes, Reuters said.
"Russia and Iran must stop the Syrian regime".
Damascus has been scoring military successes against the rebel groups in the area thanks to Russian air support and active involvement of Iran-backed militias.More news: 'Home And Away' Actress Taken Off Life Support
Turkey has accused the Syrian government of using the presence of the Nusra Front, which now fights under the banner of the Tahrir al-Sham alliance, as an excuse to attack civilians and moderate opposition groups.
Turkish President Recep Tayyip Erdogan wants a personal meeting with German Chancellor Angela Merkel to redress the strained relations of their countries.
The escalation comes as Russian Federation is hoping to hold a Syria peace congress in its Black Sea resort of Sochi on January 29-30 bringing together all the main parties in the conflict.
Russian Federation failed to convene the gathering over Turkey's objection about YPG's participation. Turkey and the United States have been at loggerheads over Washington's policy of support for the Syrian Kurdish YPG militia, which Ankara views as an extension of the Kurdistan Workers Party (PKK) waging an insurgency in southeastern Turkey.
Turkey's foreign ministry has summoned a senior USA diplomat to express Ankara's "discomfort" over Washington's support for Syrian Kurdish fighters, state media reported.