President Muhammadu Buhari has expressed Nigeria’s appreciation to the Republic of Chad for providing security back-up to the country in its security crusade against insurgency. According to a statement issued by the president’s spokesman, Mr. Femi Adesina, President Buhari made the commendation Friday at the State House, Abuja, while receiving in audience Mr. Ahmat Oumar Ahmat, a special envoy of President Idriss Deby Itno. President Buhari said “the need for security collaboration with our neighbours” was why his first trips upon assuming office in 2015 were to Nigeria’s immediate neighbours. “I went...