Ukraine claims control of Snake Island
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Troops that participated in the operation have however redeployed to their garrisons, Gromov said, without specifying whether Ukraine was maintaining a military presence there.
The Russian defence ministry meanwhile said it had carried out "precision" missile strikes on the island early Thursday, killing Ukrainian soldiers and forcing survivors to flee.
Snake Island became a symbol of Ukrainian resistance after a radio exchange went viral at the start of the war, in which Ukrainian soldiers used an expletive to rebuff a Russian warship's demand to surrender.
The Russian military said it had withdrawn "as a sign of goodwill."