Perhaps Polanski's first to flee country (4)
I believe the answer is:
oman
'country' is the definition.
(Oman is an example)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for oman that I've seen before include "Gulf state" , "Nation" , "Arabian country, capital Muscat" , "Sultanate in southwest Asia" , "monarchy" .)