African country - part of Somalia? (4)
I believe the answer is:
mali
'african country' is the definition.
(country in Africa)
'part of somalia?' is the wordplay.
'part of' says the answer is hidden in the clue.
'MALI' is hidden in the letters of 'somalia'.
(Other definitions for mali that I've seen before include "Timbuktu is in this landlocked country" , "part of Africa" , "Land" , "W. African country" , "Send mail out to Africa" .)