Germany is wrong to buckle (7)
I believe the answer is:
distort
'to buckle' is the definition.
(thesaurus)
'germany is wrong' is the wordplay.
'germany' becomes 'd' (vehicle registration code for Deutschland).
'wrong' becomes 'tort' (a civil wrong in law).
'd'+'is'+'tort'='DISTORT'
(Other definitions for distort that I've seen before include "Twist out of shape" , "Get out of shape" , "Misrepresent" , "Deform" , "turn crooked" .)