Nigeria Fires Defense Chiefs as Boko Haram Attacks Intensify

Nigerian President Muhammadu Buhari replaced the heads of the army, navy and air force on Monday as the country endures the worst period of violence by Islamist insurgents since he came to power six weeks ago.

Major-General Abayomi Gabriel Olonishakin will take over as Chief of Defence Staff, Major-General T.Y. Buratai will be the next Chief of Army Staff, and Babagana Monguno, a former major-general, was named as National Security Adviser, Femi Adesina, a spokesman for Buhari, said in a statement.