Country with no heart for revolution (4)
I believe the answer is:
spin
'revolution' is the definition.
(I know that spin is a type of revolution)
'country with no heart' is the wordplay.
'country' becomes 'Spain' (Spain is an example).
'with no heart' suggests removing the centre.
'spain' with its middle taken out is 'SPIN'.
'for' is the link.
(Other definitions for spin that I've seen before include "Revolve, turn" , "Political bias" , "Move as a top" , "Slant put on news etc" , "This doctor is a political story-polisher" .)