Countries With One Vowel (read instructions)

The answers are countries of the world which only have one vocal letter; (Any word example: "Banana", "Perfect", or "Tin"). Consider the popular country name, not the official one; (Example: Consider "China", not "People's Republic of China"; or "Cook" instead of "Cook Islands") P.S.: Don't try with "Cook" because it's not a country. Good luck!