A spokesman for the Turkish presidency, Ibrahim Kalan, announced yesterday that a quadripartite summit on Syria was to be held on the 27th of this month, including Turkish President Recep Tayyip Erdogan, Russian President Vladimir Putin, French President Emmanuel Macaron and German Chancellor Angela Merkel.

According to the official Anatolia news agency, a statement issued by Kalen said yesterday that the leaders will discuss the situation in Syria, the Idlib Agreement, the political process and all aspects of the Syrian crisis.

"The Quartet summit is expected to harmonize joint efforts to find a lasting solution to the crisis in Syria," he said.

In Moscow, the Kremlin announced yesterday that the Russian president will visit Turkey on the 27th of this month to participate in the four-way summit on Syria in Istanbul, and discuss pushing forward the settlement process in Syria, steps to strengthen security as well as the return of refugees and the reconstruction of social and economic structures.

"France intends primarily to support the maintenance of the ceasefire in the province of Idlib in order to avoid a humanitarian disaster and a new wave of refugees and to launch an effective political process," said the Elysee Palace.

In Berlin, a spokeswoman for Merkel, Martina Fitz, confirmed the holding of the summit, saying that it will discuss "the situation in Idlib, and the implementation of the Russian-Turkish Sochi agreement. Otherwise, the political process will be pursued under the auspices of the United Nations, especially the beginning of the work of the Constitution Committee ».

"As much as possible, she wants to work on the stability process in Syria, and she sees Russia as an ally of the Assad regime as a partner with special responsibilities," she said.

"We count on our ability to make progress toward stability in Syria, knowing that this process will be very complex and will take years," she said.

In a joint press conference with Erdoğan in Berlin last month, the German chancellor announced that a summit on the Syrian conflict between the leaders of France, Germany, Turkey and Russia was being prepared in October.

Last month, Turkey and Russia reached an agreement to establish a buffer zone between Syrian government forces and armed groups in Idlib, the last stronghold of these organizations in Syria, with the withdrawal of opposition forces with their weapons from the buffer zone, preventing Syrian forces from breaking into the city.

The deadline set by the Russian-Turkish agreement for the Nasra Front to evacuate the buffer zone in Idlib ended Sunday night without any withdrawal, according to the Syrian Observatory for Human Rights and a source in an opposition faction.

Turkey, close to hardline militants, has sought to convince the al-Qaeda-linked al-Sham editorial board to abide by an agreement it has drawn up with Russia, Syria's main ally, to avoid an attack Turkey fears could trigger a new wave of refugees toward its border.

US President Donald Trump announced at the end of last month that the suspension of the regime's attack on Idlib, the last stronghold of Syrian factions, was made possible after he warned Syrian regime leader Bashar al-Assad of attacking Idlib.

The US official on the file, James Jeffrey, said Wednesday that the application of the Russian-Turkish agreement on Idlib "frozen" the war in Syria, hoping to complete it by reviving negotiations to settle the Syrian conflict.

"It is an important step, because what has been done has frozen the conflict not only there, but it has been basically frozen elsewhere," Jeffrey told reporters accompanying him in Ankara, one of his overseas tour stations, commenting on the implementation of the Idlib agreement.

Since 2011, Syria has witnessed a devastating conflict that has killed more than 360,000 people, massive infrastructure damage and the displacement and displacement of more than half of the population inside and outside the country.