Ukraine's drone forces said they had struck the vessels - each under international sanctions and with a deadweight of around 7,000 tons - in the Sea of Azov. The attack is a significant escalation of the conflict between Ukraine and Russia. The vessels, which are delivering fuel to Crimea, are a critical part of the Russian military's logistics chain. By striking the vessels, Ukraine's drone forces have dealt a significant blow to Russia's ability to supply Crimea with fuel. The attack is also a major blow to the Russian economy, as Crimea relies heavily on Ukraine's ports to receive fuel supplies. Ukraine's drone forces said they had warned the vessels several times before striking them, but the owners of the vessels did not respond to the warnings. The attack is a significant development in the conflict between Ukraine and Russia, and it is likely to have far-reaching consequences for both countries. Ukraine's drone forces have said they will continue to target the vessels, but the ultimate goal is to disable Russia's ability to supply Crimea with fuel. The attack is a major step forward for Ukraine, and it is likely to have a significant impact on the conflict.