In this file photograph taken on May 26, 2017, a painting of seperatist General Chukwuemeka Odumegwu Ojukwu of Biafra leans against a wall on the floor of the Ojukwu Bunker in Umuahia, south-eastern Nigeria. A civil war opposing Biafra secessionnist tribes fighting for independance and the federal troops killed between one and two milllion people, most from hunger and disease, from 1967 to 1970 in the Biafra region in south-eastern Nigeria. STEFAN HEUNIS / AFP