Are there any countries without a flag?

Related questions

1. Which flag has the most colors?
2. Do Luxembourg and the Netherlands have the same flag?
3. Why did Netherlands change their flag?
4. Why do Germany wear green?
5. Why do the Dutch wear orange on St Patrick's Day?
6. Is Luxembourgish hard to learn?
7. What does Black symbolize in Japan?
8. Do Romania and Chad have the same flag?
9. Do Monaco and Indonesia have the same flag?
10. Why is the Dutch flag not orange?

Tags

1. #northern
2. #union
3. #which
4. #knowledge
5. #ulster
6. #ireland
7. #there
8. #patrick
9. #country
10. #national
11. #flags
12. #without
13. #world
14. #represent
15. #banner
16. #cross