North Korean puzzle

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Across
  1. 1. Type of government
  2. 5. Sea to the west of North Korea
  3. 7. North Korea's official state language
  4. 9. North Korean currency
Down
  1. 2. The state follows the principle of Juche (self-reliance)
  2. 3. Farthest north city
  3. 4. its capital, is often referred to as the heart of the regime
  4. 6. Current leader Kim ___-un
  5. 8. There are this many colors in the North korean flag