Heartless country's controlled messaging (4)
I believe the answer is:
spin
'controlled messaging' is the definition.
I can't judge whether this definition defines the answer.
'heartless country's' is the wordplay.
'heartless' says to hollow out the word (remove centre letters).
'country' becomes 'spain' (Spain is a country).
'spain' with its centre removed is 'SPIN'.
Can you help me to learn more?
(Other definitions for spin that I've seen before include "Run second leg" , "This doctor is a political story-polisher" , "Rotate quickly" , "Wheel" , "Swift whirling motion" .)