Simulated tears shed by Zulu leader (6)
I believe the answer is:
ersatz
'simulated' is the definition.
(I've seen this in another clue)
'tears shed by zulu leader' is the wordplay.
'shed' indicates an anagram (shed can mean to spill or scatter).
'by' says to put letters next to each other.
'leader' indicates taking the first letters.
The initial letter of 'zulu' is 'z'.
'tears' with letters rearranged gives 'ersat'.
'ersat'+'z'='ERSATZ'
(Other definitions for ersatz that I've seen before include "Phoney as in Germany" , "unnatural" , "Mock" , "Substitute - fake" , "inferior type" .)