Country home to the east of Belgian city (5)
I believe the answer is:
spain
'country' is the definition.
(Spain is a country)
'home to the east of belgian city' is the wordplay.
'home' becomes 'in' (to be in is to be (at) home).
'to the east of' says to put letters next to each other (some letters go to the right of others).
'belgian city' becomes 'spa' (I've seen this in another clue).
'in' put after 'spa' is 'SPAIN'.
(Other definitions for spain that I've seen before include "EU country" , "Pains badly to be in the country" , "part of Europe" , "Iberian 4" , "European nation" .)