Retire in resort, a Red Sea destination (7)
I believe the answer is:
eritrea
'red sea destination' is the definition.
The answer and definition can be both locations as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'retire in resort a' is the wordplay.
'in resort' indicates an anagram (letters get re-sorted).
'retire' with letters rearranged gives 'eritre'.
'eritre'+'a'='ERITREA'
Can you help me to learn more?
(Other definitions for eritrea that I've seen before include "State north of Ethiopia" , "Country bordering the Red Sea" , "Country of northeast Africa" , "NE African state" , "Country in the Horn of Africa" .)