Oil audit of European nation (6)
I believe the answer is:
greece
'european nation' is the definition.
(country in Europe)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for greece that I've seen before include "Country of Sophocles and Plato" , "Country of Sophocles and Aristotle" , "Hellenic republic" , "Zorba's land" , "Hellas is its ancient and modern name" .)