People united in hope helping to defend popular front, new adventure's beginning (7,6)
'people united in hope' is the definition.
(Rainbow Nation is a name for South Africa)
'helping to defend popular front new adventure's beginning' is the wordplay.
'helping' becomes 'ration' (a ration is a serving or helping).
'to defend' means one lot of letters goes inside another.
'popular' becomes 'in' ('in' can mean trendy).
'front' becomes 'bow' (the bow is the front of a ship).
'beginning' suggests taking the first letters.
The first letters of 'new adventures' is 'na'.
'ration' going around 'inbowna' is 'RAINBOW NATION'.
'new adventure's beginning' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'people united in hope helping to defend popular front' is the wordplay.
I cannot quite see how this works, but
'in' is present in the answer.
'front' could be 'bow' (the bow is the front of a ship) and 'bow' is found within the answer.
The remaining letters 'ra' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for rainbow that I've seen before include "Natural multicoloured arc" , "Iris was its goddess" , "colours in the heavens" , "'I can sing a - - ' (song)" , "Polychromatic arc" .)