
Rubio said on October 31 at the G20 foreign ministers' meeting in Atlanta that India and Turkey had proposed ideas to restore Black Sea grain shipments. He described the disruption as a threat to global food security and to some extent energy security.
He contrasted this with the harder problem of securing the Strait of Hormuz.
Proposals to reopen Black Sea shipping could ease the supply squeeze behind wheat and corn prices, though without an agreed plan the market effect is modest.
After 80 past bearish geopolitics events, Wheat (SRW) moved a median -0.4% over 5 sessions (44% higher; middle half -1.4% to +1.9%), and -0.5% over 20.
After 87 past bearish geopolitics events, Corn moved a median +0.1% over 5 sessions (51% higher; middle half -1.5% to +2.1%), and +0.3% 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.