Muhammadu Buhari has won a second term as Nigeria's president. The opposition is challenging the result. Muhammadu Buhari came to power in 2015 promising to defeat extremist group Boko Haram and also to curb corruption in the country. Shortly after taking office, Buhari declared Boko Haram "technically defeated". This morning we will examine if Buhari has lived up to this pledge.

guest: NIXON KATEMBO -AFRICA ANALYST AND KISWAHILI PRODUCER AT CHANNEL AFRICA