Characters from the embassies taping an afternoon nap (6)
I believe the answer is:
siesta
'afternoon nap' is the definition.
(I've seen this before)
'characters from the embassies taping an' is the wordplay.
'characters from' says the answer is hidden in the clue.
'SIESTA' is hidden in the letters of 'embassies taping an'.
(Other definitions for siesta that I've seen before include "Afternoon snooze" , "Catnap" , "Seat is found for a Spanish rest period" , "PM snoozing?" , "Afternoon nap in a warm climate" .)