Ukraine’s ability to keep exporting wheat, corn and other ag commodities under the threatened Black Sea Grain Initiative will be a major focus when world ag leaders meet later this week in Japan for a summit of G7 agriculture ministers, says USDA Secretary Tom Vilsack, who will be attending. “I fully expect … that there will be an extended conversation about the Black Sea Grain Initiative and key support for (Odesa ports to) be open and to express deep concern for any effort on the part of Russia to interfere with the ability of Ukrainian grain to get to countries in Africa and elsewhere,” Vilsack told reporters Wednesday.