Teheran's country (4)
I believe the answer is:
iran
'teheran's country' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for iran that I've seen before include "Country to east of Iraq" , "Persia some time ago" , "Middle East Islamic republic" , "Modern name for Persia" , "foreign land" .)