In late July the un and Turkey brokered a deal establishing safe corridors for ships from Ukraine through the Black Sea, and Ukraine has since exported more than 9m tonnes of grain. When russia invaded Ukraine in February, it took hostage a big chunk of the world’s cereal trade. Russia’s naval blockade of Ukraine’s ports made it impossible for the world’s fifth-largest wheat exporter to ship its crops, driving up global food prices. Hours earlier, the Russians said, at least 16 Ukrainian drones, both aerial and naval, had attacked Russian warships based in the port of Sevastopol, in Russian-occupied Crimea. Do you think that it was the right thing for Russia to do?

