Former President Olusegun Obasanjo, has written to 13 former African Heads of State, asking them to support the embattled President of the African Development Bank (AfDB), Dr. Akinwumi Adesina, after the United States Treasury Secretary, Stephen Mnuchin, insisted that an independent investigation be carried out into allegations of nepotism levelled against him. Obasanjo said the US insistence on an independent investigation  is outside of the rules, laws, procedures and governance system of the bank. He said Mnuchin, disparaged the AfDB and ridiculed the entire system which has been in place...