Ukraine has used Sea Baby naval drones to strike two Russian oil tankers in the Black Sea. An official from Ukraine’s security services told The Associated Press about the attack on Saturday.

Ships sailing into Russian or Ukrainian Black Sea ports or terminals around the Sea of Azov require additional war-risk insurance, typically set for a seven-day period. Underwriters previously reviewed the terms of war insurance every 48 hours, but the latest developments have prompted daily reviews, the sources said.

A Russian-flagged tanker loaded with sunflower oil reported a drone attack off the Turkish coast on Tuesday, but its 13 crew members were unharmed, Turkey's maritime authority and the Tribeca shipping agency said.

A Russian tanker traveling from Russia to Georgia was attacked in the Black Sea, marking the third strike on a Russian vessel in just five days. The Midvolga-2, carrying vegetable oil, was hit 80 nautical miles off Turkey’s coast,

Two ocean-going tankers that are heavily sanctioned for carrying Russian oil suffered near-simultaneous blasts off Turkey’s Black Sea coast. Turkey cited “external intervention” as a possible reason while announcing that one of the tankers was hit for a second time.