Nigeria, June 14 -- Former President Olusegun Obasanjo has identified four former military leaders whose actions, decisions and sacrifices, he said, were instrumental in shaping modern Nigeria, declaring that the country might not have survived in its present form without their contributions.

Mr Obasanjo spoke at the public presentation of three books and the 84th birthday celebration of former Head of State Abdulsalami Abubakar in Abuja on Saturday,

The books are 'Call of Duty: An Autobiography of Gen. Abdulsalami Alhaji Abubakar,' with a foreword by former military President, Ibrahim Babangida; 'Nigeria's Grand Patriot: Gen. Abdulsalami Alhaji Abubakar'; and 'Mediating for Peace in Africa: A Festschrift in Honour of Gen. Abdulsalami A...