text: 5 charged with bidto kill president NIGERIA LAGOS -- The Nigerian government yesterday disclosed a foiled coup plot, charging four military officers and a civilian with conspiring to topple the government by shooting down a helicopter carrying President Olusegun Obasanjo. Major Hamza al-Mustapha, former chief of personal security to the late military dictator General Sani Abacha, and four others, were each charged with two counts of ...