Nigerian former president Olusegun Obasanjo is known for his public letters to sitting presidents. In 2013 he wrote a letter to Goodluck Jonathan condemning the widespread corruption in Nigeria. This was one of the key areas, Muhammadu Buhari vowed to address during his time in office. However, the fight against graft seems to have been tougher than Buhari had calculated. According to Nigeria's Supreme Court 1,124 corruption cases were brought before the country's courts in 2017.
Obasanjo also addressed President Buhari's ill health, which had prevented him from attending to state affairs for several months. The letter came at a time when Obasanjo launched his Coalition for Nigeria movement which he claims is not a political, but a socio-economic organization.
...