No old money coming back hurt country (7)
I believe the answer is:
'country' is the definition.
(Myanmar is an example)
'no old money coming back hurt' is the wordplay.
'no old' becomes 'nay' (obsolete or archaic form of 'no').
'money' becomes 'm' (abbreviation in economics).
'coming back' is a reversal indicator.
'hurt' becomes 'mar' (I've seen this in another clue).
'naym' back-to-front is 'myan'.
(Other definitions for myanmar that I've seen before include "Army man in new Burma" , "Country of SE Asia" , "Far East location" , "Yangon is its capital" , "state since military regime" .)