The Black Sea has emerged as a critical theater in the Russia-Ukraine war, extending beyond military conflict to impact global trade and food security. Recent attacks on merchant ships in Bulgaria's waters underscore the sea's role as a vital gateway between Europe and the Mediterranean, essential for civilian commerce.
The war can be analyzed through four axes: land battles in eastern Ukraine, long-range strikes on infrastructure, naval operations in the Black Sea, and proxy conflicts in Africa. In early 2022, Russia's Black Sea Fleet overwhelmingly outnumbered Ukraine's small navy, but by early 2026, Ukraine estimated that 30 percent of Russia's combat assets were destroyed or damaged.
Geographically, the Black Sea connects key ports like Odesa and Novorossiysk, with chokepoints such as the Bosphorus and Kerch Strait. Crimea's strategic location provides Russia with a naval base and air defense capabilities, making it a prime target for Ukrainian strikes, including attacks on the Kerch Bridge. Before the war, Ukraine and Russia together supplied nearly a third of global wheat exports, with disruptions in the Black Sea region affecting food prices worldwide.
The dynamics of naval warfare shifted significantly after 2022. Ukraine initially responded to Russia's blockade with coastal missiles and unmanned boats, achieving a major victory by sinking the Russian flagship Moskva. Subsequent strikes targeted Russian ships in harbors like Sevastopol and Novorossiysk, forcing Russia to disperse its fleet and strengthen defenses. Despite these losses, Russia retains naval capabilities, including submarines and aircraft, maintaining a threat to Ukrainian shipping.
Türkiye plays a unique role as a NATO member balancing support for Ukraine with diplomatic ties to Russia. It controls the Bosphorus and Dardanelles Straits, regulating warship passage under the Montreux Convention. Türkiye also brokered the Black Sea Grain Initiative, facilitating the export of Ukrainian grain through inspected commercial routes.