Ukraine says it has expanded its maritime drone campaign from the Sea of Azov into the Black Sea, targeting Russia-linked oil and gas vessels while naval attacks by both sides continue to intensify.

Vital maritime corridor closes after 90 vessels – including shadow fleet oil tankers – are attacked in under a week

The Sea of Azov is a strategically important waterway for Russia, serving as a key route for both military logistics and exports of oil, grain, steel, and other goods to…