Russian President Vladimir Putin and Turkish counterpart Recep Tayyip Erdogan

"Vladimir Putin congratulated Recep Tayyip Erdogan on the successful outcome of a referendum on constitutional changes in Turkey," said a statement released by the Kremlin.

Earlier, US President Donald Trump also contacted Erdogan to congratulate him on the victory in the referendum.

According to Anadolu Agency, Putin and Erdogan emphasized the importance of normalizing ties, which are still recovering after a Turkish jet shot down a Russian Sukhoi Su-24M over the Syrian border in 2015.

Besides, the two leaders also noted the importance of maintaining a cease-fire in Syria jointly brokered by Ankara and Moscow./.

Compiled by BTA