Russian President Vladimir Putin and Turkish counterpart Recep Tayyip Erdogan met for talks in the Black Sea resort of Sochi.
Meantime, Moscow said it was ready to begin talks with the U.S. about a prisoner swap following the sentencing of basketball star Brittney Griner to nine years in jail on drugs charges.
Russian Foreign Minister Sergey Lavrov said Putin and his U.S. counterpart Joe Biden had previously agreed on a diplomatic channel for discussions.
It comes as Lavrov and U.S. Secretary of State Antony Blinken both attend the Association of Southeast Asian Nations in Phnom Penh, Cambodia, where they refused to speak to one another.
Elsewhere, three more shipments of grain left Ukrainian ports in the latest phase of an internationally brokered deal that aims to relieve a global food crisis. A Turkish bulk carrier was expected to arrive in the Ukrainian Black Sea port of Chornomorsk, the first to reach the country's harbor since Russia's invasion.