.WHEN RUSSIA attacked in February 2022 Ukraine rarely had a navy. The defenders scuttled their one frigate to avoid Russia coming from seizing it. Two years eventually Ukraine is battling to hold back a Russian aggression ashore-- but it is winning the battle Ocean and also has broken the Russian blockade of its grain ships. Its triumphes have actually typically depended upon swift technological innovation: intermittent naval force relies upon crewed ships to fight, however Ukraine has developed a line of drone watercrafts, or even uncrewed surface area lorries (USVs). How are they forming the war mixed-up?