Few extracts below from a longer piece.
Fulan Nasrullah writing at VineyardSaker:
Who Are The Boko Haram?
.....There are four groups, three of whom are allied to each other. They are namely:
1. Jamaa’atu Ahlis-Sunnah Lid-Da’wati Wal-Jihaad of Abubakar Shekau
2. Jamaa’atu Ahlis-Sunnah Ahlis-Sunnah Lid-Da’wati Wal-Jihaad of Sheikh Bukar Al-Barnawi
…. Group of the People of The Sunnah(Traditions) For the Call/Propagation (Evangelism) and The Struggling/Striving
3. Ansorul-Muslimiina Fii Bilaadis-Sudan led by Abu Usamah Al-Ansori
….. Helpers Of The Muslims In The Lands of The Sudan (Sudan is a classical Arabic term referring to the entire part of Muslim Africa that runs from Senegal and the Atlantic to the Ethiopia-Sudan border. Some historians also include Ethiopia and Somalia up to the Juba and Shabelle regions in it
4. Haraktul-Muhajiriina wal-Mujahidiin led by Khalid Al-Barnawi.
Movement of Those Who Have Migrated and Those Who Are Striving……..
......Their Views Of Al-Baghdadi…..
Shekau and his group have links with Abu Bakr Al-Baghdadi and his group that date back to May/June 2014 when a delegation from Shekau arrived in Ar-Raqqoh in Syria to seek an agreement of cooperation with Al-Baghdadi and his then Islamic State of Iraq and Sham. The agreement was reached and half a dozen technical advisors from the ISIS are said to have come to Nigeria via Chad and Cameroon to train Shekau’s forces. Apart from those technical no substantial support from Al-Baghdadi flowed to Shekau. ......
.....Shekau’s objective is totally indiscernible to me. If he wants to conquer the whole Nigeria or just a part, I simply cannot tell.
The others wanted revenge for 2009(Sheikh Bukar Al-Barnawi), defence of Muslims against the alleged plots of Christian Association of Nigeria and the fanatic neo-Zionist churches that are found in Northern Nigeria e.g ECWA (Evangelical Communion Of West Africa and COCIN (Church of Christ In Nigeria) with islamophobic ideologies and known consorts of Israel’s Mossad (Sheikh Abu Usamah Al-Ansori), and joining the global Jihad against the enemies of Islam (America and pro- American Muslim regimes) and waging Jihad to protect Muslim lands (Khalid Al-Barnawi), respectively. ......