Ankara is in talks with Kyiv and Moscow to open a corridor through Turkey for grain exports from Ukraine.

A senior Turkish official told Reuters.

"Turkey is in talks with both Russia and Ukraine about grain exports from Ukraine," the official said on condition of anonymity.

Negotiations are still ongoing, he said.

Ukrainian ports in the Black Sea were blocked after Russia invaded in February and more than 20 million tons of grain were stuck there.

Russian Deputy Foreign Minister Andrei Rudenko said Wednesday that Moscow is willing to provide a corridor for ships carrying food in exchange for lifting some Western sanctions.

Ukrainian Foreign Minister Dmytro Kuleba called on Russia not to give in to Russia's blackmail about a "corridor" for Ukrainian crops from across the Black Sea in exchange for the lifting of sanctions.

The U.S. rejected Russia's proposals to lift sanctions in exchange for unblocking access to Ukrainian ports.