Country torn asunder without old monarch (5)
I believe the answer is:
sudan
'country' is the definition.
(I know that Sudan is African country)
'torn asunder without old monarch' is the wordplay.
'torn' indicates an anagram.
'without' suggests deleting specific letters.
'old monarch' becomes 'ER' (Elizabeth Regina, ie Queen Elizabeth).
'asunder' with 'er' taken out is 'asund'.
'asund' with letters rearranged gives 'SUDAN'.
(Other definitions for sudan that I've seen before include "Country in NC Africa, capital Khartoum" , "Country divided by the Nile" , "Country south of Egypt" , "African region" , "African country on the Red Sea" .)