Russian President Vladimir Putin met U.S. Secretary of State Rex Tillerson on Wednesday, Russian state-run media outlet Sputnik reported.

Russian Foreign Minister Sergey Lavrov was also present during the meeting. 

Citing Russian Foreign Minister Sergey Lavrov, Russian media outlets report that Putin noted during the meeting that Russia is ready to resume its memorandum with the United States on mutual understanding and preventing incidents in Syria if the countries use armed forces to combat terrorism. 

“The resumption of the agreement is possible if the original purpose of Russia's Airspace Forces and the Air Forces of the American Coalition - the fight against the IS, Jabhat Al-Nusra and terrorist organizations associated with them  - gets confirmed,” Lavrov was cited as saying.  

Recall, Moscow suspended its memorandum with Washington on mutual understanding and preventing aerial incidents in Syria on April 7 following the US missile strikes on the Syrian Ash Sha'irat military airfield in the country's Homs province.

Signed on October 20, 2015, the memorandum reportedly regulates all aircraft and drone operations in Syrian airspace and is aimed at ensuring the safety of flights.  It includes specific safety protocols for aircraft crews to follow, namely those that stipulate the professional behavior of pilots, use of specific communication frequencies, and creation of lines of communication on the ground.

According to U.S. media outlet Politico, Tillerson received a cool reception in Moscow, as Lavrov said he was trying to understand the U.S. government’s “real intentions.”

CNN reports the talks come after Lavrov issued Tillerson a warning Wednesday against any further US strikes on the Syrian regime.

The two top diplomats had reportedly sat down together earlier in the day to work through the fallout of last week’s chemical attack in northwestern Syria, which plunged the old Cold War enemies to a new low.

The meeting comes at a difficult time for bilateral relations. Russia criticized U.S. President Donald Trump’s decision to launch an airstrike on a Syrian airbase in response to a chemical weapons attack in Idlib province last week that killed scores of people, including children.

“It can be said that the level of trust at the working level, especially at the military level, has not become better but most likely has degraded,” Putin told Russian media in an interview broadcast Wednesday.