Country seen when one's left Indonesia (5)
I believe the answer is:
india
'country' is the definition.
(I know that India is a Asian country)
'one's left indonesia' is the wordplay.
'left' is a deletion indicator.
'indonesia' with 'ones' removed is 'INDIA'.
'seen when' is the link.
(Other definitions for india that I've seen before include "Nation, I (radio comms.)" , "Code for the letter I" , "Queen Victoria considered it the Jewel in the Crown" , "(Part of) subcontinent" , "Country of Gandhi" .)