The Associated Press reports that "the Russian military says its warplanes have flown a joint mission in Syria against the Islamic State group together with the U.S.-led coalition."
"However, the Pentagon denies Russia's claim."
“'The Department of Defense is not coordinating airstrikes with the Russian military in Syria,' said Eric Pahon, a spokesman at the Pentagon. 'DoD maintains a channel of communication with the Russian military focused solely on ensuring the safety of aircrews and de-confliction of coalition and Russian operations in Syria.'”