Speaking hours after a three-way summit in Tehran at which the Turkish president, Recep Tayyip Erdoğan, pleaded with Russian Federation and Iran to halt any forthcoming offensive, Erdoğan ramped up his rhetoric, insisting Ankara would not participate in "furthering the interests of Bashar al-Assad".
A Syrian man receives treatment at a small hospital in the town of Maaret al-Noman following a suspected toxic gas attack in Khan Sheikhun, a nearby rebel-held town in Syria's northwestern Idlib province, on 4 April 2017. That also includes an estimated 10,000 hard-core fighters, including al-Qaeda-linked militants.
The head of the US Joint Chiefs of Staff also slammed the results of the summit between the leaders of Russia, Turkey and Iran on Syria, which was recently held in Tehran, by saying that the "meeting ... failed" without going into further details.
While the new US special envoy for Syria said this week that America will stay in Syria until the complete eradication of the Islamic State group, there's little assurance that President Donald Trump won't again seek the withdrawal of the roughly 2,000 USA troops in the country.
Putin said "terrorist elements" continued to "stage provocations" and use drones in Idlib.
"President Bashar al-Assad of Syria must not recklessly attack Idlib Province".
The Syrian army denies using barrel bombs.
Turkey's relations with the opposition made it a key partner with Russian Federation and Iran in their efforts to end the Syrian civil war under the so-called "Astana Process".
Turkish President Recep Tayyip Erdogan said here on Friday that Turkey would not allow bloodshed to take place in the northern Syrian province of Idlib.
Dunford declined to comment on US intelligence about the possible Syrian preparations of chemical agents.
The Kurdish-led administration control almost 30 per cent of Syria, mostly in the north-eastern part of the country, including some of Syria's largest oilfields.
Turkey - which has long backed some rebel groups - fears a final assault will trigger another major refugee crisis on its southern border.
Even American airstrikes launched against the Assad government have had limited impact in the past.
The Turkish president said earlier this week he has plans to ditch the United States dollar in trade with Iran and instead use local currencies.
Kalin said Turkey has done its utmost and will continue its tireless efforts to prevent another humanitarian catastrophe in Syria. "In short, the Trump administration appears poised to commit us to a costly, unnecessary years-long committment in Syria".
Erdogan, in his opening remarks, said a ceasefire in Idlib would be a victory for their summit.
Russia, which has been building up forces in the region, said it's only targeting al-Qaeda fighters, and accused the US of preparing to fake a chemical attack to justify new intervention.
A Western official speaking on condition of anonymity said, "I don't think the summit was ever supposed to be anything other than a stalling tactic that would distract Turkey and make it look bad".
With the spike in Russian raids on Saturday, Moscow was aiming to put pressure on Ankara to agree to a deal for a regime takover of Idlib, according to analyst Nicholas Heras.