Exchange views on princess’s malediction (7)
I believe the answer is:
discuss
'exchange views on' is the definition.
(to discuss something is to exchange views on it)
'princess's malediction' is the wordplay.
'princess's' becomes 'Di's' (Princess Diana).
'malediction' becomes 'cuss' (cuss can mean a curse or malediction).
'dis'+'cuss'='DISCUSS'
(Other definitions for discuss that I've seen before include "Argue" , "Take up" , "Go into" , "Debate" , "Settle" .)