Conclusions from The Guardian panned Boris's aims (4)
I believe the answer is:
ends
'aims' is the definition.
(I've seen this before)
'conclusions from the guardian panned boris's' is the wordplay.
'conclusions from' says to take the final letters (I've seen 'conclusion from' mean this).
The last letters of 'the guardian panned boris' are 'ENDS'.
(Other definitions for ends that I've seen before include "Brings to a close" , "Destroys" , "Stops in dens" , "'Goals, objectives (4)'" , "They may be made to meet!" .)