President Buhari with L-R: Deputy Head of Mission of Germany to Nigeria,Ms. Regine Hess, the outgoing German Ambassador, H.E. Michael ZennerPresident Muhammadu Buhari and Minister of Foreign Affairs Mr. Geoffrey Onyeama as President Buhari receives in farewell audience, H.E. Michael Zenner, the outgoing Ambassador of the Federal Republic of Germany to Nigeria in Statehouse on21st July 2016