Give notice on account of eastern conflict ending in revolution (8)
I believe the answer is:
forewarn
'give notice' is the definition.
(I've seen this before)
'account of eastern conflict ending in revolution' is the wordplay.
'account of' becomes 'for' (I've seen this in other clues).
'eastern' becomes 'e'.
'conflict' becomes 'war' (war is a kind of conflict).
'ending in' indicates one should take the final letters.
The final letter of 'revolution' is 'n'.
'for'+'e'+'war'+'n'='FOREWARN'
'on' acts as a link.
(Other definitions for forewarn that I've seen before include "urge caution?" , "Give previous notice" , "Give advance notice" , "alert" , "Point out coming danger" .)