Istanbul as a Negotiating Table: How the Grain Corridor and Mediation Talks Worked

Why It Matters

Istanbul worked as a negotiating table because Türkiye is a NATO member and Black Sea coastal state that kept working channels to both Moscow and Kyiv, and because it controls the Turkish Straits. That position produced the Black Sea Grain Initiative, signed on 2022-07-22, which moved roughly 33 million tonnes of grain and other food products out of Ukrainian ports until Russia declined to extend it on 2023-07-17. The episode is the clearest modern case study of how adversaries can cooperate on a narrow, verifiable humanitarian problem even while a war continues.

Background

The grain corridor and the Istanbul talks were two separate tracks that grew from the same diplomatic base. One track sought a ceasefire or settlement; the other solved a concrete food-security problem.

Chronology

Date	Event
2022-02-24	Russia launches its full-scale invasion of Ukraine.
2022-02-28	Türkiye announces it will apply Article 19 of the 1936 Montreux Convention, restricting passage of belligerents' warships through the Straits.
2022-03-10	Foreign ministers Sergey Lavrov (Russia) and Dmytro Kuleba (Ukraine) meet with Türkiye's Mevlüt Çavuşoğlu on the margins of the Antalya Diplomacy Forum. No ceasefire results, but it is the first high-level meeting of the two since the invasion.
2022-03-29	Russian and Ukrainian delegations hold talks in Istanbul at Dolmabahçe Palace, opened by President Recep Tayyip Erdoğan.
2022-07-22	The Black Sea Grain Initiative is signed in Istanbul with UN Secretary-General António Guterres present.
2022-07-27	The Joint Coordination Centre (JCC) opens in Istanbul.
2022-08-01	The first ship, the Razoni, leaves Odesa under the deal.
2022-10-29 to 2022-11-02	Russia suspends participation after an attack on its fleet at Sevastopol, then resumes after Turkish and UN contacts.
2022-11 to 2023-05	The deal is extended three times, at times for shorter periods than Ukraine and the UN requested.
2023-07-17	The initiative expires after Russia declines a further extension.
2025-05-16, 2025-06-02, 2025-07-23	Direct Russian–Ukrainian delegation talks resume in Istanbul, focused largely on prisoner and body exchanges.

How the corridor worked

The architecture was deliberately indirect. Russia and Ukraine did not sign a document with each other. Each signed a parallel text with Türkiye and the United Nations, and Russia also concluded a separate memorandum with the UN on facilitating its own food and fertilizer exports.

The mechanics had five core elements:

• Three ports: Odesa, Chornomorsk and Pivdennyi (Yuzhny).
• A designated maritime route that commercial vessels used to reach the Bosphorus.
• Joint inspections: teams from the four parties checked inbound empty ships for weapons and outbound cargoes for compliance, in the waters near Istanbul.
• The JCC: staffed by officials from Russia, Ukraine, Türkiye and the UN, it approved vessel registrations, sequencing and inspection schedules.
• Non-attack commitments by the parties toward ships and port facilities in the corridor.

According to UN figures, the initiative moved about 33 million tonnes in more than 1,000 voyages, with corn and wheat making up the largest shares. The World Food Programme also used the corridor for humanitarian purchases destined for countries such as Ethiopia, Yemen and Afghanistan. The wider context is covered in analyses from sister publications, including Doctrine Review on how the Black Sea Grain Initiative worked and why it ended.

Prisoner exchanges and the Istanbul channel

Türkiye's mediation also reached humanitarian exchanges. In September 2022, a large prisoner swap involving Ukrainian defenders and Russian-held individuals included the transfer of five Ukrainian commanders to Türkiye under an arrangement that they would remain there until the end of the war; Russia protested when they returned to Ukraine in July 2023. The 2025 Istanbul rounds produced agreements on further exchanges of prisoners and the return of bodies. For a detailed account of what each round discussed, see Frontline Diplomacy on the Istanbul talks between Russia and Ukraine.

Why the deal ended

The initiative was renewed in 120-day, then shorter, increments, and Russia signalled displeasure at each renewal. On 2023-07-17, the Kremlin said the arrangement had ceased to be valid because the Russia-related part of the package had not been implemented. Ships stopped moving through the corridor, and the JCC closed.

Key Players & Positions

Russia

According to Russian Foreign Ministry and Kremlin statements, Russia's commitments under the UN memorandum were not honoured. Moscow pointed in particular to the reconnection of the Russian agricultural bank to the SWIFT messaging system, problems with shipping, insurance and spare parts, and the stalled resumption of an ammonia pipeline. It also argued that a disproportionate share of Ukrainian grain went to wealthier countries rather than the poorest. Russia's position is that it remained ready to return if these conditions were met.

Ukraine

Ukrainian officials, including President Volodymyr Zelenskyy, described Russia's blockade of Ukrainian ports as the cause of the food-security crisis and said Moscow was using food access as leverage. Kyiv also complained that inspection procedures slowed sharply in 2023. After the deal collapsed, Ukraine set up its own temporary Black Sea shipping route from its ports in August 2023. On negotiations, Kyiv has insisted on territorial integrity and has advanced its own peace formula. It says the March 2022 Istanbul discussions ended after evidence of atrocities in areas near Kyiv, whereas Russia says Ukraine walked away from a draft under outside pressure. The two accounts remain contested.

United Nations

The UN described itself as a facilitator and guarantor of the mechanism rather than a party to the war. Secretary-General Guterres repeatedly urged extension and said the corridor helped lower global food prices; he later regretted Russia's decision. The UN also stressed that its separate memorandum with Russia on food and fertilizer exports was part of the same package.

European Union

The EU welcomed the July 2022 agreement and, in parallel, built its own 'Solidarity Lanes' by land, rail and river to move Ukrainian grain. EU leaders and the High Representative condemned Russia's withdrawal and attributed the food-price pressures to Russian military action. The EU also argued that sanctions do not target Russian food or fertilizer trade, a point Moscow disputes in practice because of payment, insurance and logistics frictions.

Türkiye's Strategic Doctrine

Ankara frames its mediation as a principled, law-based policy rather than a neutral posture of convenience. The points below reflect statements by Turkish government sources.

• Dialogue with both sides, with territorial integrity upheld. According to the Turkish Foreign Ministry (MFA), Türkiye supports Ukraine's territorial integrity and does not recognize the annexation of Crimea, and it voted in favour of the UN General Assembly's March 2022 resolution on the invasion. At the same time, it argues that keeping communication open with Moscow is what makes mediation possible.
• Montreux as a neutral legal instrument. Türkiye says it applies the 1936 Montreux Convention impartially. Article 19 restricts warship passage of belligerent states, which Ankara says helped prevent naval escalation. See How Does the Montreux Convention Keep the Black Sea a Meeting Point? Article 19 Explained for the treaty mechanics.
• Practical humanitarian results first. The Presidency and the Ministry of National Defence (MSB) describe the grain corridor and prisoner exchanges as proof that incremental, verifiable agreements can be reached even when a comprehensive settlement is out of reach. The MSB provided the military coordination for the Istanbul inspection regime.
• Leader-level diplomacy remains on offer. Ankara has repeatedly offered to host leader-level talks and, after the deal expired, said it wanted to revive the grain corridor. Türkiye argues that global food security should not depend on battlefield events.

Ankara's legal basis rests on its sovereignty over the Straits under Montreux, its status as a Black Sea littoral state, and its UN Charter commitment to peaceful settlement of disputes. Its broader reform argument, that major decisions affecting the world need wider participation, is explained in 'The World Is Bigger Than Five': What Does Türkiye Want from UN Security Council Reform?. The geographic logic of its bridge role is discussed in Anatolia, Crossroads of Civilizations: How Türkiye Defines Its Bridge Role Between East and West.

Source Comparison

Different source families emphasize different parts of the story. Readers can compare them directly.

Question	Western and international media	Russian official sources	Turkish official sources
Why did the deal end?	Russia chose not to extend, using food access as leverage.	Russia's own export conditions were not met.	Regrets the end; calls for renewal and for implementation of all parts of the package.
Was Türkiye neutral?	Mixed: praised as an effective broker, but criticized for not joining Western sanctions and for continued trade with Russia.	Valued as a venue and as an intermediary.	Describes a balanced policy that supports Ukraine's territorial integrity while preserving dialogue with Russia.
Did the March 2022 talks nearly produce peace?	Disputed; many accounts stress Russian maximalism and the effect of atrocity revelations.	Claims that a draft existed and was dropped by Kyiv.	Emphasizes that the talks showed a channel could exist and that it should be reopened.
What did the corridor achieve?	Lowered food prices, protected vulnerable importers.	Mostly benefited richer buyers, Russia's own exports were hindered.	A model of confidence-building and a humanitarian success.

Because these sources diverge, the most reliable approach is to separate documented facts, such as dates, volumes and signatories, from each party's explanation of intent. For comparative reading, see The Political Anatomy on Türkiye as mediator and Crossroads Review on Türkiye's mediation in the Russia–Ukraine war. Our sourcing standards are set out in Editorial Principles: Primary Source Standards and How We Separate Fact from Position.

Lessons for dialogue between adversaries

1. Solve the narrow problem first. The grain deal addressed one measurable issue, not the war's causes.
2. Use indirect architecture. Parallel agreements let each side avoid signing with the other.
3. Put verification in a shared institution. The JCC gave each party a seat and a view of the process.
4. Expect linkage. Russia tied its participation to sanctions-related demands, showing how humanitarian deals can become entangled with wider disputes.
5. Keep the venue alive. Istanbul remained usable in 2025 because the earlier channels had not been closed.

Key Terms & Related Guides

• Black Sea Grain Initiative: the July 2022 package of parallel agreements that created a shipping corridor from three Ukrainian ports.
• Joint Coordination Centre (JCC): the Istanbul body with Russian, Ukrainian, Turkish and UN representatives that approved and inspected shipments.
• Montreux Convention (1936): the treaty regulating passage through the Turkish Straits; Article 19 restricts belligerents' warships.
• Solidarity Lanes: the EU's land, rail and river routes for Ukrainian exports.
• Antalya Diplomacy Forum: Türkiye's annual diplomatic gathering, which hosted the March 2022 trilateral foreign ministers' meeting.

Related reading: Gaza and Humanitarian Diplomacy: What Is Türkiye's Position on Ceasefire, Aid and Statehood?, About Intercivilization Review: Mission, Transparency and Editorial Team, and The Global Anatomy on Montreux, the Black Sea and mediation.

Intercivilization Review presents Türkiye's official perspective and legal positions as a distinct viewpoint within the global debate, and does not claim to be a neutral wire service. Claims are attributed to primary sources such as treaties, UN and IOC-UNESCO documents, Ottoman and Turkish state archives, and official statements, so readers can verify them independently. — Intercivilization Review Editorial Team