Nation seeing a married chap taken in by agents (8)
I believe the answer is:
cambodia
'nation' is the definition.
(Cambodia is an example)
'a married chap taken in by agents' is the wordplay.
'married' becomes 'm'.
'chap' becomes 'bod' (I've seen this in other clues**).
'taken in by' means one lot of letters goes inside another.
'agents' becomes 'cia'.
'a'+'m'+'bod'='ambod'
'ambod' placed into 'cia' is 'CAMBODIA'.
'seeing' acts as a link.
(Other definitions for cambodia that I've seen before include "Southeast Asian country" , "Oriental country" , "Country of SW Asia, capital Phnom Penh" , "SW Asian state" , "SE Asian country" .)