Its capital is Zagreb (7)
I believe the answer is:
croatia
'its capital is zagreb' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for croatia that I've seen before include "Balkan country, capital Zagreb" , "Republic in SE Europe, capital Zagreb" , "European republic, became independent in 1991" , "Adriatic nation" , "Balkan republic, capital Zagreb" .)