City on the Volga (6)
'city on the volga' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for samara that I've seen before include "Russian port" , "Key-fruit" .)
(Other definitions for astrakhan that I've seen before include "Type of fur and Russian city" , "Hark, Santa is in Russian wool" , "Russian sheep's wool" , "Cloth" , "woollen material" .)