Right old passion for country (7)
I believe the answer is:
romania
'for country' is the definition.
(European country)
'right old passion' is the wordplay.
'right' becomes 'r' (common abbreviation).
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'passion' becomes 'mania' (synonyms).
'r'+'o'+'mania'='ROMANIA'
(Other definitions for romania that I've seen before include "I'm Aaron in Europe" , "East European country" , "Country of eastern Europe" , "EU country" , "European republic" .)