President Nangolo Mbumba emphasised the essence of teamwork in the execution of national duties. 

He said this principle was well-demonstrated by himself and Vice-President, Netumbo Nandi-Ndaitwah in supporting the late President Hage Geingob during his time in office and at the Swapo Party.

The annual US-Africa Business Summit hopes to put a spotlight on value addition to Africa's natural resources.

The summit is expected to start on Tuesday in Botswana for four days under the theme 'Enhancing Africa's Value in Global Value Chains'.