Quarrel after leaders in retaliation expelled charismatic figure (9)
I believe the answer is:
rectangle
'figure' is the definition.
(rectangle is a kind of figure)
'quarrel after leaders in retaliation expelled charismatic' is the wordplay.
'quarrel' becomes 'tangle' (tangle can mean a quarrel or argument).
'after' is a charade indicator (letters next to each other).
'leaders in' suggests taking the first letters.
The first letters of 'retaliation expelled charismatic' is 'rec'.
'tangle' put after 'rec' is 'RECTANGLE'.
(Other definitions for rectangle that I've seen before include "Oblong" , "Geometric figure with four right angles, not square" , "Four-sided figure" , "box" , "regular sort of figure" .)