This Sandhurst trained military dictator is an embodiment of despotic power and oppression. Fuelled by an obsession for power and an inherent insecurity, Sam decides to elect himself "President for Life". This decision snowballs into an unprecedented chaos, jeopardizing the fragile peace and stability of an already bedraggled nation. Anthills of the Savannah constitutes the political history of Kangan, which, as Beatrice observes, is essentially the story of the three male protagonists: Sam, Chris and Ikem. Once close friends, their relationship is soured by Sam's over-ambitious ways. .
Chris Oriko serves as Commissioner for Information in Sam's government and Ikem Osodi is the outspoken and radical editor of the "National Gazette" newspaper. Sam's overbearing ways worries both of them. While Chris hopes to counter this is a passive manner, from within the power structure; whereas, Ikem is on a war footing against the massive corruption in Sam's government. Ikem has been recognized by readers and critics as Achebe's own voice (authorial ideologue), Critic Emmanuel Ngara avers that, "It is my contention that if there is any character whose ideas and views are most closely related to Achebe's views on art and politics, it is Ikem Osodi. As a poet and a journalist, and also one who is not directly part of His Excellency's government machinery, Ikem appears to be the most appropriate character to raise some vital questions and to reflect on them." Through the opinions of Ikem and other characters, Achebe persuades the reader to reflect on a number of topical issues such as the place of women in society, issues relating to class struggle and the role of the writer in society, to name a few. .
Ikem comes across as a radical freethinker who does not let the autocratic ways of Sam silence him. He was popular for his scathing and fearless editorials through which he constantly questioned and criticized the government's policies.