Has nothing to do with devastated regions (7)
I believe the answer is:
ignores
'has nothing to do' is the definition.
I can't tell whether this definition defines the answer.
'devastated regions' is the wordplay.
'devastated' indicates anagramming the letters (devastate literally means destroy or lay waste to).
'regions' anagrammed gives 'IGNORES'.
'with' is the link.
Can you help me to learn more?
(Other definitions for ignores that I've seen before include "Runs away from" , "Gives the cold shoulder" , "Shrugs off" , "cuts" , "Cold shoulders" .)