Visa risk all banks withdrawing after credit crunch (6)
I believe the answer is:
crisis
'crunch' is the definition.
(thesaurus)
'visa risk all banks withdrawing after credit' is the wordplay.
I cannot quite see how this works, but
'credit' could be 'cr' (abbreviation) and 'cr' is found in the answer.
The remaining letters 'isis' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for crisis that I've seen before include "a difficult situation" , "Calamity" , "Turning point or crux" , "Turning point in illness" , "Crucial stage or turning point" .)