<P> The Secretary General was head of the Secretariat of the Organisation of African Unity . </P> <Table> <Tr> <Th> #</Th> <Th> Portrait </Th> <Th> Chairperson </Th> <Th> Took Office </Th> <Th> Left Office </Th> <Th> Country </Th> <Th> Region </Th> </Tr> <Tr> <Td>--</Td> <Td> </Td> <Td> Kifle Wodajo (acting) </Td> <Td> 25 May 1963 </Td> <Td> 21 July 1964 </Td> <Td> Ethiopia </Td> <Td> East Africa </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Diallo Telli </Td> <Td> 21 July 1964 </Td> <Td> 15 June 1972 </Td> <Td> Guinea </Td> <Td> West Africa </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Nzo Ekangaki </Td> <Td> 15 June 1972 </Td> <Td> 16 June 1974 </Td> <Td> Cameroon </Td> <Td> Central Africa </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> William Eteki </Td> <Td> 16 June 1974 </Td> <Td> 21 July 1978 </Td> <Td> Cameroon </Td> <Td> Central Africa </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Edem Kodjo </Td> <Td> 21 July 1978 </Td> <Td> 12 June 1983 </Td> <Td> Togo </Td> <Td> West Africa </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Peter Onu (acting) </Td> <Td> 12 June 1983 </Td> <Td> 20 July 1985 </Td> <Td> Nigeria </Td> <Td> West Africa </Td> </Tr> <Tr> <Td> 6 </Td> <Td> </Td> <Td> Ide Oumarou </Td> <Td> 20 July 1985 </Td> <Td> 19 September 1989 </Td> <Td> Niger </Td> <Td> West Africa </Td> </Tr> <Tr> <Td> 7 </Td> <Td> </Td> <Td> Salim Ahmed Salim </Td> <Td> 19 September 1989 </Td> <Td> 17 September 2001 </Td> <Td> Tanzania </Td> <Td> East Africa </Td> </Tr> <Tr> <Td> 8 </Td> <Td> </Td> <Td> Amara Essy </Td> <Td> 17 September 2001 </Td> <Td> 19 July 2002 </Td> <Td> Côte d'Ivoire </Td> <Td> West Africa </Td> </Tr> </Table> <Tr> <Th> #</Th> <Th> Portrait </Th> <Th> Chairperson </Th> <Th> Took Office </Th> <Th> Left Office </Th> <Th> Country </Th> <Th> Region </Th> </Tr>

Who is the secretary general of the au
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