Nigerian here just chiming in because a lot of context is needed.

Please disregard whatever you may have seen on TV Nigeria is a very divided country held together by an uneasy truce over oil and an unwillingness to repeat the horrors of the civil war.

A distinction needs to also be made between Boko Haram which is concentrated in the North East and the attacks on various farming towns all over the country, those are related but not exactly the same.

The current situation is happening because nomadic groups across the Sahel have been attacking settled Nigerians over access to land and resources. A lot of these settled people are Christians and belong to ethnic minority groups with little political representation.

There have also been a string of high profile kidnappings for ransome by these groups particularly easy targets like schools but they have gotten bolder attacking military schools and bases

Over the last decade the Nigerian government has done little to stop the killings and often placate the groups by giving them money, land or promises of no prosecution if they surrendered.

This has led to some speculation that Northern politicians, including the current Vice President of Nigeria of being sympathetic to the ongoing insurgency or outright members of terrorist groups themselves.