No one, not even Vladimir Putin or Volodymyr Zelenskiy, can tell us how this ends. But in a week of symbolic anniversaries - 10 years after the Maidan revolution, two years since the full-scale invasion of Ukraine - the following questions give an indication of what might unfold. What is the military state of play? Ukraine has sunk two dozen Russian vessels since the beginning of the war, making the Black Sea unsafe for the Russian navy and enabling Ukraine to resume shipping. Ukraine has also taken the war to Russian cities with long-range drone attacks behind Russian lines. But…