War, peace, and Europe

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Across
  1. 2. armistice
  2. 4. dropping shells from air
  3. 6. to take back
  4. 7. prevent trade with a certain country
  5. 8. reduce tensions
  6. 11. rising tensions
  7. 14. one of the three branches
  8. 15. reduce amount of weapons
  9. 16. battlestop
  10. 18. introduce
  11. 19. all you need to go to war
  12. 21. become a member (n)
Down
  1. 1. love between brothers
  2. 3. way of settling a conflict without fights
  3. 5. development of going worldwide
  4. 9. vital
  5. 10. to enhance sth.
  6. 11. to found
  7. 12. do away with (n)
  8. 13. easy to wound
  9. 17. hesitate to do sth.
  10. 20. react, answer