The United Nations says it has presented Russia with a set of new proposals in a bid to revive the initiative that had allowed grain exports from Ukrainian ports.
In July, Russia pulled out of the deal brokered by Turkey and the UN, raising concerns about a possible global food crisis.
UN Secretary-General Antonio Guterres told reporters on Thursday that he had sent a letter outlining the proposals to Russian Foreign Minister Sergey Lavrov.
Guterres did not elaborate, but said, "I believe that working seriously, we can have a positive solution for everybody."
Turkish Foreign Minister Hakan Fidan discussed the issue with Lavrov in Moscow on Thursday. Fidan described the proposal package as a "suitable basis for the revival of the initiative."
But Lavrov claimed that "the West impedes the solution of the problems that prevent a more active export of Russian grain and fertilizers."
The UN's proposals are likely to be discussed as early as next week at a summit between Russian President Vladimir Putin and his Turkish counterpart Recep Tayyip Erdogan, which is expected to take place in Russia.