✥ Divergent Thinking | OBIAGELI EZEKWESILI 's Talk. Today we 'd like to present a vey special speech of Obiageli "Oby" Ezekwesili, She is a Nigerian national, was appointed Vice President for the World Bank's Africa Region in 2007. She oversees more than 1600 staff and is responsible for the delivery of projects and economic and sectoral work in 47 Sub-Saharan countries. Oby joined the Bank from her most recent position as Minister of Education in the Government of Nigeria,