Less than 24 hours after Moscow warned that it could sink cargo ships approaching Ukraine, the government in Kyiv responded by issuing the same threat to vessels carrying Russian grain in the Black Sea.

“The Ministry of Defence of Ukraine warns that from 00.00 on July 21, 2023, all vessels heading in the waters of the Black Sea in the direction of seaports of the Russian Federation and Ukrainian seaports located on the territory of Ukraine temporarily occupied by Russia may be considered by Ukraine as … carrying military cargo with all the associated risks,” infrastructure minister Oleksandr Kubrakov tweeted on Thursday.