Ukraine's government also condemned the strikes as a violation of the UN Convention on the Law of the Sea and announced it was preparing new measures to strengthen maritime security and better protect civilian sailors . Prime Minister Serhii Koretskyi said the government was working with the military command on decisions aimed at improving shipping security and protecting civilian vessels and their crews
.
Ukraine’s Unmanned Systems Forces launched a sustained drone campaign, codenamed Operation MoLoChKa, against Russia's shadow fleet in the Sea of Azov and Black Sea . Over roughly 12 days beginning July 6, Ukrainian maritime drones struck a cumulative 116 Russian vessels — including oil tankers, gas tankers, dry cargo ships, ferries, and tugboats
. The attacks forced Russia to suspend traffic through the Kerch Strait, its key waterway connecting the Sea of Azov to the Black Sea, starting July 10
. Russia also halted grain shipping through the Don-Azov Channel
.
Russia responded by striking civilian cargo ships under the flags of Tanzania, Liberia, and the Marshall Islands . The deadliest single attack came on July 19, when Russian cruise missiles hit a Guinea-Bissau-flagged grain vessel near Odesa that had just departed with a load of corn. At least 10 crew members were killed, and the ship was left burning
. Russia also hit port infrastructure in Odesa and Pivdennyi
.
Both sides' attacks brought civilian vessel traffic through the maritime corridor to a complete halt. Shipowners avoided Odesa ports, and Russia's own grain shipping through the Don-Azov Channel was also suspended . On July 22, Sybiha stated that zero vessels passed through Ukraine's Black Sea maritime corridor — right at the peak of the agricultural harvest
. Analysts downgraded the forecast for Russian wheat exports in July by roughly 20% due to the disruptions
.
The escalation sent global wheat prices sharply higher, reflecting the fact that both Russia and Ukraine are among the world's largest grain exporters, and the conflict struck at peak harvest season .
In announcing the UN request, Sybiha explicitly compared Russia's campaign against civilian shipping in the Black Sea to Iran's attacks on vessels in the Strait of Hormuz . The comparison served several purposes: