Son lived initially in Ukraine capital and a month in Israel (6)
I believe the answer is:
kislev
'a month in israel' is the definition.
I can't tell whether this defines the answer.
'son lived initially in ukraine capital' is the wordplay.
'initially' suggests taking the first letters.
'in' means one lot of letters goes inside another.
'ukraine capital' becomes 'kiev' (I've seen this in another clue).
The first letters of 'son lived' is 'sl'.
'sl' put into 'kiev' is 'KISLEV'.
'and' is the link.
Can you help me to learn more?
(Other definitions for kislev that I've seen before include "period when Hanukkah starts" , "cool period in Israel" .)