“Defense Secretary Ashton Carter spoke with his Russian counterpart Friday as Russian military moves inside Syria continued to escalate with the arrival of fighter jets. In a ‘constructive conversation,’ both Carter and Russian Defense Minister Sergei Shoygu agreed to ‘further discuss mechanisms for deconfliction in Syria,’ Pentagon Press Secretary Peter Cook said in a statement, as the United States and its allies continue military operations against ISIS inside Syria.”
Source: Russia sends fighter jets to Syria after talks with U.S. – CNNPolitics.com