Zambian leader interrupts to contradict Central American nation (6)
I believe the answer is:
belize
'central american nation' is the definition.
(Belize is an example)
'zambian leader interrupts to contradict' is the wordplay.
'leader' says to take the initial letters.
'interrupts' means one lot of letters goes inside another.
'to contradict' becomes 'belie' ('belie' can be a synonym of 'contradict').
The initial letter of 'zambian' is 'z'.
'z' going into 'belie' is 'BELIZE'.
(Other definitions for belize that I've seen before include "Central American country, formerly British Honduras" , "Central American republic" , "Caribbean country" , "Commonwealth state" , "Country formerly called British Honduras" .)