Russian President Vladimir Putin and his Turkish counterpart Recep Tayyip Erdogan exchanged views on Syria over the phone Tuesday evening, said the Kremlin.

"The Russian side stressed the importance of efficient separation of 'moderate' opposition groups from militants of Jabhat al-Nusra (in Syria) and other terrorist groups affiliated with it," it said.

The two presidents also discussed further development of bilateral cooperation in the political, trade-and-economic and other areas, following the top-level Russian-Turkish talks in Istanbul on Oct. 10.

The two sides "agreed to continue contacts on bilateral and regional problems at various levels," the Kremlin said.