The United Nations says up to 50 people have been killed in missile attacks on hospitals and schools in Syria.
Médécins Sans Frontières reports seven people have died and eight are missing following air strikes on a hospital it supports in Idlib province, northern Syria.
A facility in the city of Ma’arat al-Numan was struck by four missiles in two attacks within minutes of each other, staff members say.
The medical charity’s French president says either Syrian government forces or Russia is behind the attacks.
This comes amid separate reports from Turkey claiming seven Russian missiles have struck a hospital, a school and other locations in the rebel-held Syrian border town of Azaz.
At least 14 civilians were killed, including children, according to Turkish officials.
The death toll is expected to rise.
In an interview published in Spiegel on Monday, Russia’s Deputy Foreign Minister said Russian troops would continue air strikes against the ISIL and Al-Nusra groups, despite a proposed ceasefire in Syria.
Turkey’s Prime Minister Ahmet Davutoglu claims Moscow’s goal is to leave just two options for governance in Syria: current President Bashar al-Assad or ISIL.
Speaking from Ukraine, he too blamed Moscow for the Azaz strikes and said children were among those killed. He added: “We can see that Russia’s intention is to kill more civilians and carry out more massacres in support of the Syrian regime.”
He claims Russia and the Kurdish YPG militia have closed the humanitarian border north of the Syrian city of Aleppo.