View a faction seizing power (6)
I believe the answer is:
aspect
'view' is the definition.
('aspect' can be a synonym of 'view')
'a faction seizing power' is the wordplay.
'faction' becomes 'sect' ('sect' can be a synonym of 'faction').
'seizing' is an insertion indicator.
'power' becomes 'p'.
'sect' going around 'p' is 'spect'.
'a'+'spect'='ASPECT'
(Other definitions for aspect that I've seen before include "Appearance or viewpoint" , "Particular part or element, of a problem say" , "'Appearance, facet (6)'" , "View, panorama" , "Characteristic to be considered" .)