Only to those who regard the phases of the Moon as a "mystery."
Any intelligent high school sophomore who has taken "World History" would be able to explain it to you in a few concise sentences.
The chief explanation: For the same host of reasons that all the other poor countries of E. Europe wanted to join!
Regards,
I can name three that would like to pull-out and one biggie that never joined.
You’re not an employee of the EU are you?