Nigeria, Dec. 16 -- President Bola Tinubu on Monday described the late President Muhammadu Buhari as a leader defined by integrity, discipline and a lifelong commitment to public service, saying his legacy should guide future leaders rather than be reduced to slogans.

Mr Tinubu spoke in Abuja at the unveiling of the book: "From Soldier to Statesman - The Legacy of Muhammadu Buhari."

The book, a biography of the late former president, was authored by Charles Omole and presented to the public on Monday.

The Nigerian president said the book offers Nigerians the opportunity to learn from Mr Buhari and affirmed that the greatest honour to be bestowed on the late President is to sustain his legacy.

"This book reinforces the public memory. I...