India-China tensions in Arunachal Pradesh: From Longju to Taksing – EXPLAINED
New Delhi: The India-China border dispute in Arunachal Pradesh has come into focus again following reports of fresh face-offs between Indian and Chinese troops along the Line of Actual Control. ITBP Director General Shatrujeet Kapur recently confirmed that face-offs had taken place at multiple locations along the Arunachal Pradesh frontier. Earlier reports had highlighted tensions near Asaphila, close to Taksing in Upper Subansiri district, and an encounter during routine patrolling near Maja. The ITBP and the Indian Army continue to maintain a presence in forward areas to monitor the situation and prevent further escalation.
Local concerns over traditional lands
In June 2026, the Nah Welfare Society, which represents members of the Nah tribal community, alleged that China’s People’s Liberation Army had gradually expanded its presence in areas traditionally used by local residents for grazing and agriculture.
Nah Welfare Society had submitted a memorandum to the district administration. It identified locations including Oying in the Asaphila area, Paniar, Marpan, Potrang Lake and Tindingtang, claiming that local residents had lost access to some of their traditional lands. The NWS appealed to the authorities to conduct a ground survey, restore access to the affected areas and strengthen border security and infrastructure.
The allegations, however, were disputed by the Indian Army. On 29 June, the Army described media reports of Chinese encroachment and the establishment of camps inside Indian territory as incorrect and without basis.
The historical roots: From Longju to the 1962 war
The present tensions in Arunachal Pradesh have their roots in a boundary dispute that goes back more than a century. In 1914, British Indian and Tibetan representatives reached an understanding on the boundary known as the McMahon Line. India recognises this line as its international boundary in the eastern sector, while China rejects its legitimacy.
China’s control over Tibet in the early 1950s changed the strategic situation along the frontier.
A major clash took place at Longju in August 1959. On 25 August, Chinese troops opened fire on an Indian forward post. The next day, they surrounded and attacked the post, forcing Indian troops to withdraw. The incident marked an early turning point in India–China relations.
Tensions later led to the 1962 war. On 20 October, Chinese forces launched a major attack in the eastern sector, including the Namka Chu area. Fighting spread to both the eastern and western sectors. China announced a unilateral ceasefire in November, however, the boundary dispute remained unresolved and continues to affect relations between the two countries.
Understanding the boundary dispute
India and China do not have a mutually agreed and fully demarcated boundary along the entire disputed frontier. To understand the issue, it is important to distinguish between the boundary claims, official maps and the line separating areas under their control.
The McMahon Line forms the basis of India’s boundary claim in the eastern sector. The Line of Actual Control (LAC) separates areas under Indian and Chinese control, but both countries disagree on its alignment in some places. These differences can lead to face-offs when patrols enter areas both sides claim.
The Survey of India maps show India’s official territorial position, including Arunachal Pradesh as integral part of India.
China rejects the McMahon Line and claims Arunachal Pradesh, referring to it as “Zangnan” or “South Tibet”. This difference between India’s recognised boundary and the disputed alignment of the LAC is central to tensions on the Eastern frontier
The dispute over place names
The boundary dispute also extends to maps and names of places in Arunachal Pradesh. China has repeatedly assigned Chinese names to locations in Arunachal Pradesh to reinforce its territorial claim. India has rejected these moves, stating that changing place names cannot alter the region’s status as integral part of India.
On 7 August 2026, India identified 27 locations and geographical features in Arunachal Pradesh by their official names on Survey of India maps. The list included villages, mountain passes, a lake and war memorial. It also included Longju, linked to the 1959 border clash, and Thag La, associated with the 1962 war. Maja, near Taksing, was also included.
The move reflects India’s effort to formally record these places within its own mapping system. While China uses renaming to reinforce its territorial claim, India maintains that such actions do not change the status of Arunachal Pradesh. The history of Longju in 1959 and the 1962 war demonstrates how an unresolved boundary dispute can escalate into armed conflict.
For India, the challenge is to maintain vigilance along the frontier while addressing local concerns and strengthening border infrastructure. At the same time, diplomatic and military communication remains important to prevent local encounters from escalating.