The Spanish in pub with us in eastern European country (7)
I believe the answer is:
belarus
'eastern european country' is the definition.
(I know that Belarus is Eastern European)
'the spanish in pub with us' is the wordplay.
'the spanish' becomes 'el' ('the' in Spanish).
'in' is an insertion indicator.
'pub' becomes 'bar' (both are drinking establishments).
'with' is a charade indicator (letters next to each other).
'el' going inside 'bar' is 'belar'.
'belar'+'us'='BELARUS'
'in' acts as a link.
(Other definitions for belarus that I've seen before include "European nation)" , "Minsk's country" , "European republic" , "East European country, capital Minsk" , "State" .)