Capital Cities - can you get them all?

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Across
  1. 3. Portugal
  2. 5. Egypt
  3. 8. Japan
  4. 9. Fiji
  5. 12. New Zealand
  6. 15. India
  7. 16. Samoa
  8. 17. Australia
Down
  1. 1. Mexico
  2. 2. Russia
  3. 4. South Korea
  4. 6. England
  5. 7. USA
  6. 10. Canada
  7. 11. China
  8. 13. The Phillipines
  9. 14. Germany
  10. 18. Scotland