X twice makes to betray both sides (11)

'to betray both sides' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'x twice' is the wordplay.
I cannot quite see how this works, but
'x' could be 'cross' (I've seen this before) and 'cross' is present in the answer.
'twice' could be 'double' (synonyms) and 'double' is located in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).

'makes' acts as a link.

Can you help me to learn more?