African country bordering a West African country (6)
I believe the answer is:
malawi
'african country' is the definition.
(country in Africa)
'african country bordering a west' is the wordplay.
'african country' becomes 'mali' (country in Africa).
'bordering' is an insertion indicator.
'west' becomes 'W' (abbreviation).
'a'+'w'='aw'
'mali' placed around 'aw' is 'MALAWI'.
(Other definitions for malawi that I've seen before include "Country W. of Lake Nyasa" , "African nation, formerly Nyasaland" , "It was called Nyasaland" , "Landlocked country of south central Africa" , "A law I'm making up in Southern Africa" .)