After warship sinking: Putin fires admiral who was believed to be dead. Putin's fleet is increasingly in poor condition - high levels of wear and tear on the Russian leadership.

The new types of sea drones in particular appear to be very effective in the fight against the Russian navy. The remote-controlled speedboats are increasingly turning out to be a key weapon in the Ukrainian fight against Russian maritime sovereignty. Only five large landing ships remain off the Crimean peninsula, Ukrainian spokesman Dmitro Pletenchuk told the press.