"Certain regimes" left the nation's army underfunded and underequipped to take on the insurgent group, says Alex Badeh, who was sacked last month.
Cameroon and Nigeria soothed tensions this week and vowed to improve military cooperation on Boko Haram, but the two countries failed to provide specifics.
Security forces rescued 59 people on Thursday and another 12 on Wednesday from villages about 25 miles from Borno's largest city Maiduguri.
Chad said on Thursday its forces had killed 117 Boko Haram insurgents during a two-week military campaign aimed at clearing islands on Lake Chad used by the militants as hideouts and bases to launch attacks.
Nigeria's Maj. Gen. Iliya Abbah was chosen to lead the 8,700-strong Multinational Joint Task Force to fight militants.
Former Nigerian President Goodluck Jonathan and his administration was widely accused of corruption during his tenure.
After attacks by women and girls linked to Boko Haram, the full Islamic veil is outlawed in parts of Niger and Cameroon.
The damning report by Kenya's auditor general also revealed that just 1 percent of government spending was "incurred lawfully and in an effective way."
Cameroonian President Paul Biya saw the Nigerian leader's failure to visit sooner as a snub.
U.S. President Barack Obama's administration reportedly gave Nigerian President Muhammadu Buhari the names during their talks at the White House last week.
After suicide bombing attacks by suspected Boko Haram militants, Northern Cameroon implemented a number of sweeping security measures Sunday.
The explosion in the center of Damaturu came six days after a suicide bomber killed three policemen at a checkpoint on the outskirts of Yobe state’s capital city.
A lack of opportunities in Africa must be addressed at the Global Entrepreneurship Summit in Kenya to spur the development of entrepreneurship on the continent.
President Muhammadu Buhari criticized the U.S. law forbidding the provision of weapons to the Nigerian army because of past human rights violations.
The U.S. and Nigerian presidents met at the White House to discuss Boko Haram's growing threat as well as the corruption and public health issues facing Nigeria.
The newly elected Nigerian president has made cracking down on the extremist Boko Haram group a top priority.
The kidnapping took place in an ISIS stronghold southeast of the city of Sirte, Libya, said a resident, who asked not to be named.
No one has claimed responsibility for the blast, but it bore the hallmarks of Boko Haram, which has launched countless attacks in the northeastern state.
Countries in the Middle East, Sub-Saharan Africa and East Asia still lack adequate programs to ensure proper vaccination coverage.
A decadeslong, low-level conflict between Nigerian farmers and herders is costing Nigeria nearly $14 billion in economic development each year.
Nigerian President Muhammadu Buhari and his entourage will depart Sunday to meet with U.S. President Barack Obama and other White House officials.
The All Progressives Congress has called on the government to probe the whereabouts of billions of dollars.