European wheat futures have surged to a one-month high due to concerns over Black Sea export supplies amid escalating tensions from Russia's war with Ukraine. December wheat prices settled at 225.00 euros per metric ton, peaking earlier at 228.00 euros. The market is reacting to a damaged grain vessel and increasing conflict risks. Despite early-season Black Sea wheat exports, smaller harvests and weather issues have raised supply concerns. EU wheat supply is also declining due to poor harvests in France and Germany. The USDA has lowered its EU wheat production estimate but increased global wheat stock forecasts. Chicago wheat prices also rose, bolstered by a weaker dollar and Black Sea risks.