The president disclosed this on Thursday at a meeting of the National Security Council at the council chambers of the State House, Abuja.
The council, which is chaired by the president, is the highest security organ in the country and holds its meetings once every quarter.
Speaking with journalists after the meeting on Thursday, the National Security Adviser (NSA), Babagana Monguno, said the meeting focused on possible areas where the nation needs urgent attention and possible solutions.
He disclosed that as the national security adviser, he presented some memos to the council on issues around the insurgency in the northeast, armed banditry and emergence of different kinds of groups terrorising Nigeria in recent times.
Speaking on the response of Mr Buhari to all issues raised, the NSA said the president renewed his commitment to do whatever is necessary to reduce the spate of violence and insecurity in the country.
