History of Nagaland

Was searching for history of Nagaland and came across this article by Sh. Tarun Vijay,

Manipuris also feel threatened by the growing clout of the separatist Naga organizations like National Socialist Council of Nagaland-Isaac-Muivah group (NSCN-IM) which demands a chunk from Manipur to create a "Greater Nagalim for Christ". In fact, Nagaland was created on December 1, 1963 slicing off parts of Assam, namely Naga Hills, Tuensang district and Dimapur after a fierce insurgency launched by A Z Phizo, who took refuge in London under British patronage and the Church's support. They still nourish a dream to create a Christian-dominated colony serving British and US interests in the region and their "war cry" is "Republic of Nagalim for Christ."