Ukrainian President Volodymyr Zelensky praised his people for their determination since Russia invaded the country in February and for making “the most important decision of their life- to fight”. Zelensky told Ukrainians late Thursday that they should be proud of having withstood 50 days under Russian military aggression when the “invaders gave us a maximum of five”. On a day that saw Moscow suffer a stinging symbolic defeat with the loss of its Black Sea fleet flagship. Zelensky said in his nightly speech: “But they didn’t know how brave Ukrainians are, how much we value freedom and the poss…