Head of nation arriving with a man, related (8)
I believe the answer is:
narrated
'related' is the definition.
(I've seen this before)
'head of nation arriving with a man' is the wordplay.
'head of' says to take the initial letters.
'arriving' becomes 'arr' (abbreviation used in transport).
'with' is a charade indicator (letters next to each other).
'man' becomes 'ted' (Ted is a man's name).
The first letter of 'nation' is 'n'.
'n'+'arr'+'a'+'ted'='NARRATED'
(Other definitions for narrated that I've seen before include "Recounted, recited" , "Related" , "told a tale" , "Told a story, gave an account of" , "Provided commentary" .)