"In the current situation, introduction of an area where no side could carry out airstrikes, a kind of no-fly zone, could be helpful. We cannot negotiate with terrorists. But if it were possible to achieve such an agreement between the anti-Assad coalition and those supporting Assad, it would really help," she said in an interview with the local Stuttgarter Zeutung newspaper.
In November, US President Barack Obama said imposing a no-fly zone in Syria to improve the humanitarian situation in the region was counterproductive.
Russia has been conducting precision airstrikes against terrorists in Syria at the request of Assad since September 30, 2015. A US-led international coalition has been bombing Daesh targets since 2014, without Damascus' approval.