UKRAINE has unleashed a second marine drone attack in just 24 hours on Putin's Black Sea fleet, blasting a hole through yet another of his ships. Dramatic footage onboard the explosive-packed kamikaze sea drone shows the exact moment it struck the 4,754-ton Russian tanker in the Black Sea off the coast of annexed Crimea. In a humiliating blow to Putin, the attack came only a day after Russian warship Olenegorsky Gornyak was damaged following an almost identical Ukrainian sea drone attack. Putin's spokesperson, Dmitry Medvedev, warned Ukraine that there would be retaliation for their "terrorist attacks" and accused them of trying to "arrange an ecological catastrophe in the Black Sea". Mykhailo Podolyak, advisor to Ukrainian president Volodymyr Zelensky, said the use of drones in the Black Sea, "will ensure freedom and security in the Black Sea for world trade”.