Conversation so far:
When did Thabo Mbeki arrive in Lusaka?
Mbeki left London for Lusaka in April 1971.
Why did he go to Lusaka?
to take up the position of assistant secretary of the ANC's Revolutionary Council (RC).
Did he enjoy his time in Lusaka?
CANNOTANSWER.

Question: What was his mission in Lusaka?
Self-contained rewrite: What was Thabo Mbek's mission in Lusaka?