Crossword Genius

Ex UN Chief is a non-aligned national (5)

Ross

I believe the answer is:

annan

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'ex un chief' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'a non-aligned national' is the wordplay.
'a' becomes 'an'.
'non aligned national' becomes 'nan' (this might be a standard abbreviation which I don't know about).
'an'+'nan'='ANNAN'

'is' acts as a link.

Can you help me to learn more?

(Other definitions for annan that I've seen before include "UN Secretary-General, 1997-2006" , "Ban predecessor" , "Kofi -, UN Secretary-General" .)

I've seen this clue in The Hindu.
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