Ukraine claims it has carried out an airstrike in Crimea that destroyed a Russian Navy tank landing ship. CNN cannot independently verify the claim, but a video shared by Ukrainian Air Force Commander Mykola Oleshchuk appears to show large explosions in the Feodosia port. CNN cannot independently verify this video.Ukraine claims it has carried out an airstrike in Crimea that destroyed a Russian Navy tank landing ship. CNN cannot independently verify the claim, but a video shared by Ukrainian Air Force Commander Mykola Oleshchuk appears to show large explosions in the Feodosia port. CNN cannot independently verify this video.