Moscow, Washington and Riyadh did not agree in full "as yet" on the final solution for the Syria crisis, Russian Foreign Minister Sergei Lavrov said on Monday but said there was clear progress in talks between the countries on the conflict. Lavrov's statemets comes after President Vladimir Putin on Sunday met with Saudi Deputy Crown Prince Mohammed bin Salman on the sidelines of the Russian Grand Prix in Sochi, Russia. The two discussed Syria and steps to establish a peace process in the war-torn country. Turkey to hold talks with Russia, Iran Meanwhile, Turkish Prime Minister Ahmet Davutoglu said on Monday that Ankara would hold talks with Russia and Iran to work towards a political solution in Syria but would not take a foreign policy stance which "legitimizes the Syrian regime." Davutoglu said in an interview on NTV that Russian air strikes in Idlib and Aleppo in Syria could cause a further influx of refugees into Turkey. Russian strikes against rebels helped pro-government forces reclaim territory in Syria over the weekend and on Monday, dealing a fresh setback to opposition groups supported by Turkey and the United States. Russia was previously criticized for not targeting Islamic State of Iraq and Syria (ISIS) targets in Syria. On Monday, Russia's Defence Ministry said Russian military airplanes had carried out 55 sorties in Syria in the past 24 hours and hit 53 ISIS targets there, Russian news agencies reported. In the same time, Syria-based missile systems harassed four Turkish F-16 warplanes near the border between the two countries on Sunday, Turkey's military said in a statement on Monday, adding that its units gave the "necessary response." The military did not specify what that response was, but it was the first time it referred to such a response after around a week of harassments of its jets. EU to condemn Russia strikes In a related story, European Union foreign ministers will condemn on Monday Russia's air strikes on Western-backed rebels in Syria and warn they risk prolonging the conflict, according to a draft statement seen by Reuters. "The recent Russian military attacks that go beyond Daesh and other U.N.-designated terrorist groups, as well as on the moderate opposition, are of deep concern, and must cease immediately," the draft prepared by EU ambassadors said, referring to Islamic State militants. "This military escalation risks prolonging the conflict, undermining a political process, aggravating the humanitarian situation and increasing radicalization," the draft said. EU foreign ministers were meeting in Luxembourg on Monday.