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Escalating attacks on Black Sea ports, grain terminals and vessels since July have disrupted Russian and Ukrainian grain exports during the post-harvest shipping period. S&P Global Energy CERA says Odesa-region strikes removed about one-third of Ukraine's grain export capacity, and Kerch Strait and Azov-Don restrictions hit a route handling about 28% of Russia's wheat exports.
Ukrainian wheat exports fell to 935,332 mt in July from 1.6 million mt in June.
Lost Black Sea export capacity tightens global wheat and corn supply just as buyers look for replacement origins, which supports prices for wheat and corn and raises feed costs.
spglobal.comAug 25, 2026After 361 past bullish geopolitics events, Wheat (SRW) moved a median +0.7% over 5 sessions (58% higher; middle half -1.4% to +3.7%), and +1.3% over 20.
After 323 past bullish geopolitics events, Corn moved a median +0.5% over 5 sessions (57% higher; middle half -1.5% to +2.9%), and +0.9% over 20.
After 94 past bullish geopolitics events, Wheat (HRW) moved a median +0.1% over 5 sessions (50% higher; middle half -2.7% to +5.8%), and +0.1% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
Strikes removed about a third of Ukraine's export capacity and hit a key Russian route, tightening global wheat supply and underpinning the rally.
Black Sea port disruption tightened global grain supply and lifted the grains complex, with spillover to corn.
