The Shillong Accord of 1975 was an agreement signed between the Government of India, also referred to as the Federal government, or Union government, or Central government of India, and Nagaland's underground government, also referred to as the Naga Federal government, or Naga guerillas, or Naga rebels, to accept the supremacy of Constitution of India without condition, surrender their arms and renounce their demand for the secession of Nagaland from India.
This historic agreement was signed at Shillong, Meghalaya, on 11 November 1975; thus, the name Shillong Accord of 1975.
There were a series of four discussions held with governor alone; at times, assisted by his advisors and Joint secretary of MHA. In all the four discussions held on 10 and 11 November 1975, the representatives from underground government and liaison committee participated.
The outcome of the discussions were compiled into three-point agreement, that ultimately came to be known as historic "Shillong Accord of 1975."
The "Shillong Accord" was signed on 11 November 1975 at Shillong, by the Governor of Nagaland L.P. Singh representing Indian government and the Nagaland's underground leadership represented by Kevi Yalie, M. Assa, S. Dahru, Veenyiyl Rhakho, and Z. Ramyo.
A supplementary agreement, detailing the process of depositing arms as per Clause 2 of Shillong Accord of 1975, was signed on 5 January 1976. The agreement included the implementation process of Clause 2, including the modalities for housing the underground members in peace camps.
The "Supplementary Agreement" was signed on 5 January 1976 at Shillong, by the Governor of Nagaland L.P. Singh representing Indian government and the Nagaland's underground leadership represented by Biseto Medom Keyho, Pukrove Nakhro, I. Temjenba, and Z. Ramyo.
The signing of Shillong Accord appears to have provided the final solution for the last twenty-years of conflict that inflicted suffering and neglect; accordingly, a large-scale of arms were surrendered, and the villagers enthusiastically participated in persuading the Naga underground rebels to come out and join the mainstream. The agreement also seems to be a victory for Indian government as Naga rebels agreed to accept the Indian constitution of their own volition, agreed to deposit the arms, and formulate other issues for discussions as part of final settlement.
The detractors and critics of the Shillong Accord maintained that the Clause 3 that stated "reasonable time for the underground representatives to formulate other issues for discussion for the final settlement," still remained unimplemented -- as most of the Naga people and the Naga National Council(NNC) leaders abroad didn't agree to endorse the agreement. They even criticized saying that the agreement was signed by "representatives of the Naga underground," rather than the organizations like NNC or the Federal Government of Nagaland(FGN).