Syllabus: GS II & V– Federalism and Inter-State Relations.

Why in the News?

The Assam–Nagaland border dispute has again attracted attention after fresh tensions were reported along the border in Golaghat district in August 2026. Nagaland’s government said confrontations took place around Longayim and Merapani, following disagreements involving plantation activity and local residents. Both states subsequently activated coordination and peace mechanisms to prevent further escalation.

The issue is much older than these recent incidents. It represents one of India’s longest-running inter-state boundary disputes, involving history, identity, land, forest resources and competing interpretations of colonial-era boundaries.

How Did the Dispute Begin?

• Assam and Nagaland share a border of roughly 512 kilometres spread across 6 districts of Assam.
  • Sivasagar-Nagaland: 57.80 Km
  • Charaideo-Nagaland: 34 Km
  • Jorhat-Nagaland: 128.50 Km
  • Golaghat-Nagaland: 126.50 Km
  • Dima Hasao-Nagaland: 45.60 km
  • Karbi Anglong-Nagaland: 119.70 Km
  • Nagaland has a total of 16 districts of which 7 districts share boundaries with Assam.
• The dispute has its roots in the different administrative boundaries created during British rule. 
• The historical issue can be traced to the 1866 notification and the subsequent 1925 reorganisation of the Naga Hills and adjoining areas.
  • Nagaland territory was created by the British in 1866 by a notification comprising the Naga hills and the Naga dominated areas of present day Sivsagar, Jorhat, Golaghat, Karbi Anglong.
  • Nagaland was again reorganised as an autonomous area by the 1925 notification.
• In 1963 Nagaland was created as a separate state from Assam under the State of Nagaland Act, 1962. However, the exact boundary remained contested. 

The Supreme Court itself has noted that Nagaland was created from territories of Assam but that the precise boundary remained unresolved.

Why Does the Dispute Persist?

• Assam relies on constitutionally recognised boundaries, as defined at the time of Nagaland’s statehood in 1963.
• Nagaland has, however, historically argued for a boundary reflecting areas it considers traditionally inhabited or associated with the Naga people.
• Colonial-era notifications created different administrative boundaries at different points of time, resulting in competing historical interpretations.
• Forests, agricultural land and settlements lie close to the disputed areas, making the issue directly connected with people’s land, livelihoods and security.
• Periodic encroachment allegations and unilateral administrative or plantation activities can quickly turn local disagreements into larger inter-state tensions.

A History of Repeated Violence

The dispute has produced several violent episodes over the decades.

• The 1965–1968 period witnessed early clashes, although four interim agreements were also reached to maintain peace and work towards a permanent settlement.
• The 1979 violence resulted in more than 50 deaths and large-scale displacement, according to the uploaded source.
• The Merapani incident of 1985 resulted in 41 deaths, including 28 police personnel.
• Another major outbreak of violence occurred in 2014, causing deaths and displacement.

Recent incidents show that although large-scale violence has reduced, the dispute remains capable of generating localised confrontation.

Various Commissions 

• In 1971 the central government appointed the Sundaram Commission to examine the border issue and recommend solutions. 
  • However, its recommendations were not implemented, and the dispute remained unresolved.
• Similarly, Shastri Commission (1985), J.K. Pillai Commission (1997), Variava & Chatterjee Commissions (2006) attempted to resolve the boundary issue but failed.

The Constitutional and Legal Route

• Assam approached the Supreme Court under Article 131, which provides the Court’s original jurisdiction in certain disputes between the Union and States or between States.
• The Supreme Court appointed a Local Commission to assist in identifying the boundary and later also explored mediation. The dispute remains under judicial consideration.

Institutional Mechanism 

• The Border Protection and Development Department of Assam deals with Assam’s inter-state boundary issues, while Nagaland has a Department of Border Affairs dealing primarily with the Assam–Nagaland dispute. 
• Nagaland also reports the functioning of Border Peace Coordination Committees involving representatives from both states.

Way Forward

The broader approach should therefore combine law, dialogue, development and local participation.

• Boundary-related actions such as eviction or plantation drives should be undertaken through prior coordination between both states, rather than unilateral action.
• Joint surveys using modern cartography, satellite imagery and geographic information systems can reduce disputes arising from old or ambiguous maps; the Supreme Court has previously considered the use of modern technology for boundary identification.
• Border-area development should benefit communities on both sides so that the boundary becomes a zone of cooperation rather than confrontation.
• Local communities must be involved because the dispute directly affects their land, forests, livelihoods and social relationships.
• Regular meetings of district administrations, police and community representatives can prevent small incidents from becoming violent confrontations.

The Union Government’s role is primarily that of a facilitator, as inter-state boundary settlements ultimately require the willing cooperation of the concerned states.

Why Does It Matters for Assam and Northeast India?

The Assam–Nagaland dispute illustrates a larger challenge of Northeastern federalism. State boundaries created through administrative reorganisation often intersect with older ethnic, cultural and economic landscapes.

A permanent solution therefore requires more than simply fixing a line on a map. It requires historical understanding, scientific demarcation, political dialogue, economic development and trust among border communities.

Exam Hook – Key Takeaway

The Assam–Nagaland dispute demonstrates how historical boundary-making can continue to influence contemporary federal relations, internal security, land rights and regional development.

Mains Question

“Inter-state boundary disputes in Northeast India require dialogue and development along with legal resolution.” Discuss with reference to the Assam–Nagaland dispute.

One-Line Wrap

For Assam and Nagaland, the lasting solution lies not merely in deciding where the boundary should run, but in ensuring that the people living along it can live, work and prosper without fear.