Book time to carve Arab nation's leader, a little European (3,5,2,5)
I believe the answer is:
the woman in white
'european' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'book time to carve arab nation's leader a little' is the wordplay.
I cannot really understand how this works, but
'time' could be 't' (abbreviation) and 't' is present in the answer.
'carve' could be 'hew' (hewing is a kind of carving) and 'hew' is found within the answer.
'arab' could be 'omani' (someone from Oman) and 'omani' is located in the answer.
'leader' could be 'e' (I've seen this in other clues) and 'e' is present in the answer.
'little' could be 'whit' (I've seen this before) and 'whit' is located in the answer.
A single letter 'n' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for the woman in white that I've seen before include "Book by Wilkie Collins" , "novel" , "Musical from Wilkie Collins" .)