Washington condemned the airstrikes launched by Syrian regime forces backed by Russia on hospitals and civilian infrastructure in Idlib, northwestern Syria, and called for the success of political efforts to resolve the Syrian crisis.

State Department spokeswoman Morgan Ortagos said in a statement late on Friday that the attacks in the past 48 hours left 12 people dead and about 40 wounded, injuring a school, maternity hospital and civilian buildings.

The recent reported incidents reflected a clear approach against civilians and infrastructure by Russian and regime forces, she said, adding that the ordinary people had experienced enough tragedies from President Bashar al-Assad's regime.

Ortagos reiterated Washington's support for the work of the UN investigation board charged with investigating attacks on UN-sponsored medical facilities in Syria, saying there was no military solution to the clashes, and urged Russia and the Assad regime to resolve the conflict through a UN-sponsored political process.

More than 60 medical facilities in Idlib governorate have been shelled in the past six months, four of them during the past week, the UN High Commissioner for Human Rights spokesman Robert Colville said.

More than 25 civilians have been killed in Russian and Syrian airstrikes on residential areas in the Idlib de-escalation zone in the last week, while the civilian death toll since the de-escalation agreement reached in Sochi on September 17, 2018, has reached more than 1,300. More than one million civilians have been displaced.