Russian President Vladimir Putin shakes hands with Turkish President Tayyip Erdogan during a signing of a bilateral agreement on construction of the TurkStream undersea gas pipeline in Istanbul, Turkey, October 10, 2016. Sputnik/Kremlin/Alexei Druzhinin via REUTERS

MOSCOW (Reuters) - Russian President Vladimir Putin and Turkish President Tayyip Erdogan discussed the Syria crisis in a phone conversation on Sunday, the Kremlin said in a statement.

Kazakh President Nursultan Nazarbayev, who is visiting Russia now, also took part in the call, it added. Erdogan called Putin to express his condolences over the crash of Russian TU-154 plane near the Black Sea city of Sochi, the Kremlin said.