Russian, Ukrainian and Turkish military delegations are set to meet U.N. officials in Istanbul on Wednesday to break a monthslong impasse over stalled grain deliveries across the Black Sea, reports TurkicWorld with

Türkiye has been working with the United Nations to broker a deal after Russia's Feb. 24 invasion of Ukraine fuelled prices for grains, cooking oils, fuel and fertilizer. Turkish Defence Minister Hulusi Akar announced the latest talks on Tuesday.

"Military delegations from the Turkish, Russian and Ukrainian defense ministries and a delegation of the United Nations will hold talks tomorrow in Istanbul on the safe shipment to international grain markets waiting in Ukrainian ports," Akar said.

"We are working hard indeed but there is still a way to go," U.N. Secretary-General Antonio Guterres told reporters on Tuesday. "Many people are talking about it. We prefer to try and do it."

Diplomats say details of the plan under discussion include Ukrainian vessels guiding grain ships in and out through mined port waters; Russia agreeing to a truce while shipments move; and Turkey – supported by the United Nations – inspecting ships to allay Russian fears of weapons smuggling.

Ukraine sparked hopes on Tuesday for an increase in grain exports despite Russia's blockade of Black Sea ports, noting that ships had started to pass through an important mouth of the Danube river.

The four-way meeting with Turkish officials comes as food prices soar around the world due to Russia's invasion of Ukraine.

Ukraine and Russia are major global wheat suppliers, and Russia is also a large fertilizer exporter, while Ukraine is a significant producer of corn and sunflower oil.

Russia's invasion and sea blockade of Ukraine have stalled exports, leaving dozens of ships stranded and more than 20 million tonnes of grain stuck in silos at Odessa.

The coming harvest is also at risk as Ukraine is now short of storage space due to the halt in exports.