"We as humanitarian advocates must raise our voice", said Jens Laerke from the Office for the Coordination of Humanitarian Affairs (OCHA).
"Such a meeting is possible and is being prepared", Kremlin spokesman Dmitry Peskov told reporters on a conference call.
Mr Peskov said Mr Putin discussed the situation in Idlib with members of Russia's Security Council on Friday.
Russian Foreign Minister Sergei Lavrov said on Friday Britain was using the case of poisoned former double agent Sergei Skripal to rally its European partners behind it at a time when Brexit was isolating London. They added that the expected attack by Syrian troops on Idlib province would make other battles in the country look minor.
It warned that an attack on Idlib "with little regard for civilian life would generate a catastrophic human rights and humanitarian crisis".
Conflicting parties must cease and refrain from the future use of indiscriminate weapons or tactics to target thousands of fighters interspersed among 2.9 million civilians, including one million children.
UN Special Envoy for Syria Staffan de Mistura at a meeting in Geneva on September 14, 2018.
The opposition accuses Russian Federation and its allies of attacking hospitals and civil defense centers to force rebels to surrender in a repeat of earlier, large-scale military offensives in areas such as Aleppo and Eastern Ghouta. Mr Erdogan and Mr Putin failed to agree on a ceasefire at a three-way summit in Tehran last week which also involved Iranian President Hassan Rouhani.
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And following talks last week with Iran and Russian Federation, .
The province saw its population swell drastically as rebels and civilians were being sent there from other opposition strongholds after they capitulated to government forces.
This represents almost 10,000 more than the figure announced by the United Nations earlier this week.
Washington's threats to take military action to deter a Syrian assault on Al-Qaeda-held Idlib province has prompted Fox News host Tucker Carlson to ask the obvious question: Why would the USA bomb a country to protect terrorists? The most powerful of these groups is Hayat Tahrir al-Sham (HTS), formerly known as Jabhat al-Nusra; it is an affiliate of Al-Qaeda, the terrorist organization the USA holds responsible for the 9/11 terrorist attacks in 2001. The group is dominated by the former Syrian affiliate of Al Qaeda.
"We will keep the refugees in Syria for the safety of both Turkey and European countries".
But Turkish Defence Minister Hulusi Akar, in comments on Wednesday evening, indicated that there were continued contacts with Russian Federation and Iran for a diplomatic solution.
The UN chief appealed to Iran, Russia and Turkey to find a way to isolate terrorist groups and create a situation in which civilians will not have to pay price for solution of the Idlib problem.