Obstructed southern hideout used by European communist (9)
I believe the answer is:
snookered
'obstructed' is the definition.
(to snooker is to block in the opponent in snooker)
'southern hideout used by european communist' is the wordplay.
'southern' becomes 's' (abbreviation).
'hideout' becomes 'nook'.
'used by' is a charade indicator (letters next to each other).
'european' becomes 'e' (abbreviation e.g. EU).
'communist' becomes 'red' (red is a kind of communist).
's'+'nook'+'e'+'red'='SNOOKERED'
(Other definitions for snookered that I've seen before include "Put in difficult position" , "Thwarted" , "blocked" .)