Russia's defence ministry on Sunday said it had recovered and analysed the wreckage of drones used to attack ships of Russia's Black Sea Fleet in Crimea the day before, finding that the drones were equipped with Canadian-made navigation.
The ministry has said Ukraine attacked the Black Sea Fleet near Sevastopol with 16 drones early on Saturday, and that British navy "specialists" had helped coordinate what it called a terrorist attack, a claim Britain has denied.
Russia said it had repelled the attack but that the ships targeted were involved in ensuring the grain corridor out of Ukraine's Black Sea ports.
