Group planning defence by Ukraine ultimately organised rota at a fair speed? (8)
I believe the answer is:
moderato
'at a fair speed?' is the definition.
(moderately, in music)
'group planning defence by ukraine ultimately organised rota' is the wordplay.
'group planning defence' becomes 'MOD' (Ministry of Defence).
'by' is a charade indicator (letters next to each other).
'ultimately' says to take the final letters.
'organised' indicates anagramming the letters.
The final letter of 'ukraine' is 'e'.
'rota' anagrammed gives 'rato'.
'mod'+'e'+'rato'='MODERATO'
(Other definitions for moderato that I've seen before include "with steady movement" , "steadily scored" , "At an average pace (music)" , "at a medium pace" , "not too fast, not too slow" .)