Unlucky incident where Mike in Russia given Putin's head (6)
I believe the answer is:
mishap
'unlucky incident' is the definition.
(I've seen this before)
'mike in russia given putin's head' is the wordplay.
'mike in russia given' becomes 'misha' (I am not sure about this - if you are sure you should believe this answer much more).
'head' suggests taking the first letters.
The first letter of 'putin' is 'p'.
'misha'+'p'='MISHAP'
'where' acts as a link.
Can you help me to learn more?
(Other definitions for mishap that I've seen before include "Stroke of bad luck" , "Accident, something going wrong" , "Unfortunate minor accident" , "Unlucky development" , "Contretemps" .)