Cover provided by EU and NATO repositioning around November (7)
I believe the answer is:
tonneau
'cover' is the definition.
(I've seen this before)
'eu and nato repositioning around november' is the wordplay.
'and' is a charade indicator (letters next to each other) (I've seen this in other clues).
'repositioning' indicates anagramming the letters.
'around' means one lot of letters goes inside another.
'november' becomes 'n' (phonetic alphabet: alpha, bravo, charlie etc.).
'eu' after 'nato' is 'natoeu'.
'natoeu' with letters rearranged gives 'toneau'.
'toneau' enclosing 'n' is 'TONNEAU'.
'provided by' is the link.
(Other definitions for tonneau that I've seen before include "Protective cover for open car" , "car's back seat" , "Open-top car cover" , "back of the car" , "Seat cover" .)