Ukraine last week appeared to attack Russia's Black Sea Fleet using a swarm of naval and aerial drones. Russia labeled the attack a "terrorist act" and briefly suspended a deal on grain shipments. Experts told Insider the attack demonstrates that nowhere is safe for Russia's naval assets. Russia has not, to date, taken such steps to protect its Black Sea Fleet, a force which has participated in the missile barrages of Ukraine and lost its flagship in another stunning Ukrainian attack. Nothing powered by a jet ski engine is going to be able to match the speed and range of a Russian ship at sea; when Ukraine sunk the cruiser Moskva, the former flagship of Russia's Black Sea Fleet, it did so with a cruise missile.

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