Heard about any trouble involving India's eternal foe (7)
I believe the answer is:
nemesis
'eternal foe' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'heard about any trouble involving india's' is the wordplay.
'heard about' shows a homophone (sound like).
'trouble' becomes 'mess' ().
'involving' indicates putting letters inside.
'india' becomes 'i' (phonetic alphabet: alpha, bravo, charlie etc.).
'any' sounds like 'ne'.
'mess' placed around 'i' is 'mesis'.
'ne'+'mesis'='NEMESIS'
Can you help me to learn more?
(Other definitions for nemesis that I've seen before include "Come-uppance" , "curse" , "enemy" , "rival who can't be beaten" , "Goddess of revenge - seems in (anag)" .)