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.
What was his mission in Lusaka?
Mbeki travelled to Beichlingen to deliver a speech on behalf of the ANC's Executive Committee at the YSS summer school.
What did he do while there?
This was a turning point in Mbeki's life as it was the first time he spoke on behalf of the ANC as opposed to the ANC Youth League.
What was a career highlight while he was in Lusaka?
In December 1972, Mbeki joined Tambo at Heathrow Airport to meet Mangosuthu Buthelezi to discuss mass resistance to apartheid.
Was the outcome good?
Mbeki is credited with facilitating the establishment of Inkatha - it was his responsibility to nurture the relationship between Buthelezi and the ANC.

Question: When did he arrive in Botswana?
Self-contained rewrite: When did Thabo Mbek arrive in Botswana?