The importance the North Eastern states especially Manipur held since the times of Mahabharata: Arjuna, was killed in Manipurby the king Babruvahana, was brought back to life by another North-Eastern Naga Princess Ulupi.
In recent years, the AFSPA has been lifted or modified in some areas, including in the state of Tripura and in some districts of the state of Arunachal Pradesh.
What arms could not do, Christ did. American Baptist missionaries risked malaria and beheadings to enter Naga areas and slowly converted them to Christianity.