Nigeria, Sept. 11 -- After being weakened by years of clashes with rival Boko Haram faction Islamic State West Africa Province (ISWAP), Jama'tu Ahlis Sunna Lidda'awati wal-Jihad (JAS) is making a comeback in the Lake Chad Basin.

Cameroon, Chad, Niger, and Nigeria's intensified national counter-terrorism operations and coordinated aerial and ground assaults have slowed down ISWAP's Camp Holocaust campaign. But the focus on ISWAP has allowed JAS to regroup and bolster itself.

Added to this is the failure of reintegration programmes to provide former insurgents with adequate support. Without meaningful future prospects, former combatants are rejoining JAS - something that ISWAP does not allow. Former ISWAP members would be executed for des...