Delegates from Russia, Turkey and Iran were wrangling over the terms of the final communique which would need to be approved – though not formally signed – by the government and opposition delegations.
Putin also said he hoped that Moscow and Washington could eventually get their troubled relations back to normal.
Under Barack Obama, the US applied various sanctions against Russia for its involvement in Ukraine, the Syrian war and for alleged cyber attacks to influence the US election.
Trump has said he accepted the intelligence agencies’ conclusion that Russia is to be blamed for cyber hacking that interfered with the US presidential election.
The FBI opened preliminary investigations into Trump and his entourage’s dealings with Russians that were based in part on Steele’s reports
The talks on Syria’s political future are expected to take place on January 23 in Kazakhstan.
Donald Trump also warned of hardline if he had a falling out with Russian President Vladimir Putin.
Asked to respond to the prospect of new US sanctions affecting Russia’s oil and gas sector, Peskov said such measures, if they happened, would damage Russia, bilateral ties, and the global economy.
“We will not expel anyone,” Putin said in a statement.
Obama had ordered a series of actions in response to Russia’s alleged harassment of US officials and cyber attacks targeting the US election.
Putin also said that Russia had agreed to reduce its military deployment in Syria.
“There has been a move towards a compromise,” said Andrey Kortunov, director general of the Russian International Affairs Council, a think tank close to the Russian Foreign Ministry.
Russia and China as the UN Security Council permanent members “confirmed their flexible approach to delisting Afghan individuals from the UN sanctions lists as their contribution to the efforts aimed at launching peaceful dialogue between Kabul and the Taliban.”
The two sides are likely to clinch agreements on economic cooperation in areas from medical technology to energy.
Putin told Japanese journalists that it’s difficult for him to say how big the chance is “because it depends on factors including the flexibility of our partners.”