Ukraine sent Russia an August 13 proposal through a third party calling for both sides to stop attacking civilian targets in the Black Sea, a narrow moratorium aimed at protecting commercial shipping rather than securing a broader ceasefire. The move came as Ukraine said Russian airstrikes had effectively shut its remaining Black Sea ports near Greater Odesa, potentially cutting planned agricultural exports by half, and after Ukrainian strikes suspended all three grain terminals in Novorossiysk, Russia's main Black Sea export hub. Turkey said it had conveyed a Black Sea moratorium plan to both sides, while Russia said it had not received a formal ceasefire proposal. The disruption has deepened risks to grain flows and global food supplies, with Ukrainian grain exports down 76% year-on-year so far in August and many shipowners avoiding Odesa.