.WHEN RUSSIA penetrated in February 2022 Ukraine rarely possessed a navy. The protectors scuttled their one frigate to avoid Russia from appropriating it. Two years eventually Ukraine is struggling to hold back a Russian offensive ashore-- but it is actually winning the battle in the Black Sea and has broken the Russian blockade of its grain ships. Its triumphes have actually often relied on rapid technological innovation: every other naval force relies upon crewed ships to fight, but Ukraine has actually created a line of drone boats, or even uncrewed surface cars (USVs). Just how are they molding the war mixed-up?