Erdogan: Turkish President claims US-led forces have supported ISIS

On Tuesday, Moscow also accused Washington of "sponsoring terrorism" in Syria.

Last year, Moscow launched bombing attacks to help and support President Bashar al-Assad and his government forces to retake its territory against the rebels, some of whom are backed by the U.S. government.

In addition to ISIS, Erdogan claimed USA -led coalition forces have also provided support to the Kurdish Kurdish militant groups YPG and PYD, according to Reuters.

"It is impossible for the Obama administration not to understand that such weapons will quickly end up in the hands of jihadists with whom the ostensibly "moderate" opposition has long acted as one".

It said that such weapons deliveries would pose a "direct threat" to Russian warplanes, military personnel, and diplomatic staff in Syria.

During Trump's election campaign, he vowed to improve US-Russia relationship.

A back-and-forth exchange between Trump and Putin over nuclear weapons last week tested the Republican's promises to improve relations with Russian Federation however.

52 percent of Republican voters believe Trump won the popular vote
Clinton won her home state of IL in November, pulling in 55.4 percent of the vote to Trump's 39.4 percent, according to NBC News . Although it's possible for "faithless objectors" to sway the election results by voting against Trump, it seems unlikely.

The Obama administration and USA intelligence officials have accused Russian Federation of trying to interfere with the US election by hacking Democratic Party accounts.

Mr Lavrov spoke to Mr Erdogan by telephone on Tuesday and they agreed to push for a ceasefire and to prepare for the Astana talks.

Lavrov did not say where the current talks were being held and it was unclear which opposition groups were taking part.

"We in the High Negotiations Committee certainly have no connection to this matter", George Sabra, a leading member of the opposition coalition, told Reuters.

Last week, the foreign ministers of Iran, Russia and Turkey gathered in Moscow to coordinate efforts for peace in Syria following the liberation of the city of Aleppo from terrorist groups.

President Vladimir Putin has said that Russia, Iran and Turkey and Assad have agreed that Astana, the Kazakh capital, should be the venue for new Syrian peace talks.

"The parties discussed the ways to settle the Syrian crisis in the light of the agreements reached at the recent trilateral meeting between the Russian, Turkish and Iranian foreign ministers, aimed at ensuring ceasefire across Syria and stepping up the war on terror", the statement reads.