Northeast India has been witnessing inter-state border disputes since the early 1960s when the process of reorganization of the state of Assam commenced. Border disputes of Northeast India mainly include inter-state conflict between Assam–Mizoram, Assam–Arunachal Pradesh, Assam–Nagaland and Assam–Meghalaya.
Disputes in North-East India
(i) Assam-Meghalaya dispute over 12 points including Langpih, Boko, etc. in Kamrup, Kamrup Metropolitan and Hailakandi districts. These disputes stemmed from the Meghalaya government’s refusal to accept the Assam Reorganisation (Meghalaya) Act of 1969.
(ii) Assam-Nagaland dispute over Naga Hills and all Naga- dominated area in North Cachar and Nagaon districts, which were part of Naga territory under 1866 notification from British. As per Assam, Nagaland has been encroaching upon over 66,000 hectares in Sivasagar, Jorhat, Golaghat and Karbi Anglong districts.
(iii) Assam-Mizoram dispute over boundaries in southern Assam's Barak Valley and the Lushai Hills, based on two British-era notifications of 1875 and 1933 with Mizoram demanding boundary as decided in 1875.
(iv) Assam-Arunachal Pradesh dispute over forested tracts in the plain areas of border.
Reasons for Inter-state Border Disputes in North-East India
Spillover Effects of Inter-State Border Disputes in North-East
Social
Economical
Political
It is time to find a lasting solution to the border problem in the North East, which would not only result in harmonious relations between the many states involved, but would also serve as a key juncture in India's ‘Act East Policy,' given its proximity to ASEAN countries. Furthermore, China's presence in India's North East via the Belt and Road Initiative makes it all the more vital to resolve the North East's "internal border problems" as soon as practicable.