Good for France and Germany to stick together (4)
I believe the answer is:
bond
'stick together' is the definition.
(I've seen this in another clue)
'good for france and germany' is the wordplay.
I cannot really see how this works, but
'good' could be 'bon' (I've seen this in other clues) and 'bon' is found within the answer.
'germany' could be 'd' (vehicle registration code for Deutschland) and 'd' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'to' is the link.
Can you help me to learn more?
(Other definitions for bond that I've seen before include "Join; secret agent" , "one licensed to kill" , "Obligation" , "Affinity" , "Tie - debenture" .)