Crossword Genius

Just punishment is required after revolutionary observed stealing millions (7)

Ross

I believe the answer is:

nemesis

I'm a little stuck... Click here to teach me more about this clue!

'just punishment' is the definition.
(I've seen this in another clue)

'is required after revolutionary observed stealing millions' is the wordplay.
I cannot really see how this works, but
'is' is within the answer.
'millions' could be 'm' (abbreviation) and 'm' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for nemesis that I've seen before include "opponent you can't beat" , "Nee Miss (anag.)" , "causes downfall" , "Figure of retribution" , "Retribution personified" .)

I've seen this clue in The Telegraph.
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