Ukraine has proposed to Russia that both sides stop attacking civilian targets in the Black Sea, transmitting the offer through a third party and awaiting a response as weeks of strikes on ports and vessels deepen concern over grain flows and global food supplies. Deputy Russian Foreign Minister Alexander Grushko said Moscow had received no formal Black Sea ceasefire proposal, while Turkish Foreign Minister Hakan Fidan said a moratorium plan had been passed to both sides. The initiative follows a sharp escalation around export infrastructure, including Ukraine's strike on Novorossiysk and Russia's subsequent hit on Izmail in Odesa region. Russia's de facto blockade of Ukraine's Black Sea ports has pushed Ukrainian grain exports down 76% year-on-year so far in August, and Euronext September wheat gave up earlier gains after the report on Kyiv's offer.