This man surprisingly tours India, a former settlers' leader (3,5)

'former settlers' leader' is the definition.
(Rhodesian prime minister Ian Smith)

'this man surprisingly tours india a' is the wordplay.
I cannot quite see how this works, but
'man' could be 'smith' and 'smith' is found in the answer.
'india' could be 'i' (phonetic alphabet: alpha, bravo, charlie etc.) and 'i' is present in the answer.
'a' could be 'an' and 'an' is present in the answer.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).