Middle Eastern national and extremists expelled from country (5)
I believe the answer is:
omani
'middle eastern national' is the definition.
(someone from Oman)
'extremists expelled from country' is the wordplay.
'extremists expelled from' indicates the central letters (letters on the extremes are removed).
'country' becomes 'Romania' (European country).
The middle of 'romania' is 'OMANI'.
'and' acts as a link.
(Other definitions for omani that I've seen before include "coming from the Middle East" , "Asian" , "Middle East national" , "From an Arabian country, capital Muscat" , "Citizen of a country, capital Muscat" .)