Apparently the Moskva may not have sunk after all. According to reports the Russians have taken the still burning hulk under tow and are attempting to bring it back to Crimea.
Russia still claiming it was an accident that caused the explosion and fire. But other Russian navy ships in the Odessa blockade have moved further away, outside of the known range of Ukrainian Neptune anti-ship missiles.
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@jurban @Render maybe a bit late with this, but it seems the Russians have admitted the Moskva has sunk whilst in tow. Possibly re-deploying as an undersea special op?