Unnamed person’s infiltrating Asian country and another (9)
I believe the answer is:
indonesia
'and another' is the definition.
I can't tell whether this definition defines the answer.
'unnamed person's infiltrating asian country' is the wordplay.
'unnamed person's' becomes 'ones' ('one' can mean an unspecified person. I am not sure about the 'unnamed' bit.).
'infiltrating' indicates putting letters inside.
'asian country' becomes 'India' (country in Asia).
'ones' going into 'india' is 'INDONESIA'.
Can you help me to learn more?
(Other definitions for indonesia that I've seen before include "I said none (anag) - country" , "State" , "somewhere in Asia" , "An ionised country of South East Asia" , "SE Asian country" .)