Lavrov pointed out that "an attack on a country whose government fights terrorism only plays into the hands of extremists, creates additional threats to regional and global security," the Russian ministry said.
According to Reuters, he also told Tillerson that assertions that the Syrian military used chemical weapon in Idlib province on April 4 do not correspond to reality, the ministry added.
It said Lavrov and his U.S. counterpart agreed to continue discussions on Syria in person. Tillerson is expected in Moscow for talks with Russian officials next week.