Who's under attack?

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Across
  1. 3. The School for Diplomacy and Candor can be found here
  2. 5. The inhabitants of this system recently appealed to the Federation for protectorate status to protect themselves from the Romulan Free State
  3. 7. Home of one of Earth's oldest colonies a mere 25ly from Sol
  4. 9. USS Defiant was destroyed in this system.
  5. 10. One of the most famous and notable pleasure planets of the Federation
  6. 11. The loss of the USS Enterprise-C here paved peaceful path forward for the Federation and Klingon Empire
  7. 15. Home to the Klingon Empire's greatest shipyards
  8. 16. Original an Earth colony, this system was captured by the Romulans during the Earth-Romulan War and is now part of the Free State
  9. 17. A dilithium rich core world that joined the Federation late due to mistrust of certain founding species
  10. 18. Home to the Cardassian Twelth Order
  11. 19. Kahless the Unforgettable promised to return from Sto-vo-kor here
  12. 20. A capitalist haven between the Federation and Romulan Free State
  13. 21. Bordering Kzinti space, this system is home to the M'Yengh shipyards
Down
  1. 1. This system was a core world occupied during the Dominion War
  2. 2. The Romulan Republic relies on this system to support its navy and trade
  3. 4. This system suffered a brutal occupation during the Federation/Klingon War
  4. 6. This system shares its name with the Roman god of the forge
  5. 8. This system is still defended by the Imperial Guard
  6. 12. One of only a few systems that produces Zenite
  7. 13. Home system to the species that gives its name over to the longest-lived criminal syndicate in the galaxy
  8. 14. Home to two intelligent species that enter into a symbiotic relationship sparingly
  9. 16. The closest system to Sol
  10. 22. Named after the first captain of the SS Enterprise