The Sino-Indian War took place between China and India from October to November 1962, as a major flare-up of the Sino-Indian border dispute. There had been a series of violent border skirmishes between the two countries after the 1959 Tibetan uprising, when India granted asylum to the Dalai Lama. Chinese military action grew increasingly aggressive after India rejected proposed Chinese diplomatic settlements throughout 1960–1962, with China re-commencing previously-banned "forward patrols" in Ladakh after 30 April 1962. Amidst the Cuban Missile Crisis, China abandoned all attempts towards a peaceful resolution on 20 October 1962, invading disputed territory along the 3,225-kilometre (2,004 mi) border in Ladakh and across the McMahon Line in the northeastern frontier. Chinese troops pushed back Indian forces in both theatres, capturing all of their claimed territory in the western theatre and the Tawang Tract in the eastern theatre. The conflict ended when China unilaterally declared a ceasefire on 20 November 1962, and simultaneously announced its withdrawal to its claimed "Line of Actual Control".
Arunachal Pradesh is a state in Northeastern India. It was formed from the erstwhile North-East Frontier Agency (NEFA) region, and became a state on 20 February 1987. It borders the states of Assam and Nagaland to the south. It shares international borders with Bhutan in the west, Myanmar in the east, and a disputed border with China in the north at the McMahon Line. Itanagar is the state capital of Arunachal Pradesh. Arunachal Pradesh is the largest of the Seven Sister States of Northeast India by area. Arunachal Pradesh shares a 1,129 km border with China's Tibet Autonomous Region.
The McMahon Line is the boundary between Tibet and British India as agreed in the maps and notes exchanged by the respective plenipotentiaries on 24–25 March 1914 at Delhi, as part of the 1914 Simla Convention. The line delimited the respective spheres of influence of the two countries in the eastern Himalayan region along northeast India and northern Burma (Myanmar), which were earlier undefined. The Republic of China was not a party to the McMahon Line agreement, but the line was part of the overall boundary of Tibet defined in the Simla Convention, initialled by all three parties and later repudiated by the government of China. The Indian part of the Line currently serves as the de facto boundary between China and India, although its legal status is disputed by the People's Republic of China. The Burmese part of the Line was renegotiated by the People's Republic of China and Myanmar.
Tawang is a town and administrative headquarter of Tawang district in the Indian state of Arunachal Pradesh. The town was once the capital of the Tawang Tract, which is now divided into the Tawang district and the West Kameng district. Tawang continues as the headquarters of the former.
In 1986–87, a military standoff took place between India and China in the Sumdorong Chu Valley bordering the Tawang district, Arunachal Pradesh and Cona County, Tibet. It was initiated by China moving a company of troops to Wangdung, a pasture to the south of Sumdorong Chu that India believed to be its territory. The Indian troops stood their ground on the neighbouring Longro La ridge and both the sides moved a large number of troops to the border. The crisis was diffused after the visit of Indian External Affairs minister to Beijing in May 1987. The standoff gave rise to fears of escalation. Subsequently, India and China formulated agreements for managing future border tensions.
The Sino-Indian border dispute is an ongoing territorial dispute over the sovereignty of two relatively large, and several smaller, separated pieces of territory between China and India. The first of the territories, Aksai Chin, is administered by China as part of the Xinjiang Uygur Autonomous Region and Tibet Autonomous Region and claimed by India as part of the union territory of Ladakh; it is mostly uninhabited high-altitude wasteland in the larger regions of Kashmir and Tibet and is crossed by the Xinjiang-Tibet Highway, but with some significant pasture lands at the margins. The other disputed territory is south of the McMahon Line, in the area formerly known as the North-East Frontier Agency and now called Arunachal Pradesh. The McMahon Line was part of the 1914 Simla Convention signed between British India and Tibet, without China's agreement. China disowns the agreement, stating that Tibet was never independent when it signed the Simla Convention.
Tsona County or Cona County is a county in Shannan prefecture in southern part of Tibet region of China. The county lies immediately to the north of the McMahon Line agreed as the mutual border between British India and Tibet in 1914. Chine has not accepted the 1914 border delineation, but treats it as the Line of Actual Control (LAC). The Tsona County also borders Bhutan on its southwest.
Mechukha or Menchukha is a town, assembly constituency and subdivision, situated 6,000 feet (1,829 m) above sea level in the Mechukha Valley of Yargep Chu/ Siyom River in Shi Yomi district of Arunachal Pradesh state of India. Before the 1950s, Mechuka valley was known as Pachakshiri.
The Subansiri River is a trans-Himalayan river and a tributary of the Brahmaputra River that flows through Tibet's Lhuntse County in the Shannan Prefecture, and the Indian states of Arunachal Pradesh and Assam. The Subansiri is 442 kilometres (275 mi) long, with a drainage basin 32,640 square kilometres (12,600 sq mi). It is the largest tributary of the Brahmaputra contributing 7.92% of the Brahmaputra's total flow.
The Bum La Pass is a border pass between China's Tsona County in Tibet and India's Tawang district in Arunachal Pradesh. It is 37 km away from the town of Tawang in India's Tawang district and 43 km from the town of Tsona Dzong in China’s Tsona County. The pass currently serves as a trading point between Arunachal Pradesh and Tibet. It is also an agreed Border Personnel Meeting point for the security forces of China and India.
Milakatong La or Menlakathong La is a historic mountain pass along the trade route between Tawang in India's Arunachal Pradesh and Tsona Dzong in Tibet's Shannan province via the valley of Tsona Chu.
Namka Chu or Kejielang River is a tributary of Nyamjang Chu that flows along the disputed border between India and China. The Indian side of the border is the Tawang district in Arunachal Pradesh. The Tibetan side of the border is in Tsona Dzong, Shannan province of Tibet. Namka Chu originates near the trijunction of Tibet, Bhutan and India and flows east for 26 km before joining Nyamjang Chu. It is about 200 kilometers away from the Misamari railhead and 60 kilometers from the Tawang road head. The Namka Chu valley was the scene of some of the most fierce fighting between India and China during the 1962 Sino-Indian war.
Border Personnel Meeting points are locations along the disputed Sino-Indian territories on Line of Actual Control (LAC) where the armies of both countries hold ceremonial and practical meetings to resolve border issues and improve relations. While border meetings have been held since the 1990s, the first formal Border Personnel Meeting point was established in 2013. There are five meeting points: two in the Indian Union Territory of Ladakh or India's Western (Northern) sector corresponding to China's Southern Xinjiang Military District of the Western Theater Command, one in Sikkim, and two in Arunachal Pradesh in India's Central and Eastern sectors corresponding to China's Tibet Military District.
Dhola Post was a border post set up by the Indian Army in June 1962, at a location called Che Dong, in the Namka Chu river valley area disputed by China and India. The area is now generally accepted to be north of the McMahon Line as drawn on the treaty map of 1914, but it was to the south of the Thagla Ridge, where India held the McMahon Line to lie. On 20 September, the post was attacked by Chinese forces from the Thagla Ridge in the north, and sporadic fighting continued till 20 October when an all-out attack was launched by China leading to the Sino-Indian War. Facing an overwhelming force, the Indian Army evacuated the Dhola Post as well as the entire area of Tawang, retreating to Sela and Bomdila.
Nyamjang Chu, or Nyashang Chu (Tibetan: ཉ་བཤང་ཆུ, Wylie: nya bshang chu, THL: nya shang chu) is a cross-border perennial river that originates in the Shannan Prefecture of Tibet and flows into the Arunachal Pradesh state of India, joining the Tawang Chu river just before it enters Bhutan. The Nyamjang Chu valley has provided the traditional communication route between Tawang and Tibet. The valley near town of Zemithang in the Tawang district, called the Pangchen Valley, is known for its serene beauty and forms one of the wintering locations for the black-necked crane.
Tawang Chu is the main river of the Tawang district in Arunachal Pradesh, India. The entire district may be regarded as the basin of the Tawang Chu river. In addition, two south-flowing rivers from Tibet, viz., Tsona Chu and Nyamjang Chu, join the river within the district. The combined river flows west into Bhutan, where it progresses to the Manas River and flows into the Assam state of India.
Longju or Longzu is a disputed area in the eastern sector of the China–India border, controlled by China but claimed by India. The village of Longju is located in the Tsari Chu valley 2.5 kilometres (1.6 mi) south of the town of Migyitun, considered the historical border of Tibet. The area of Longju southwards is populated by the Tagin tribe of Arunachal Pradesh.
Chumi Gyatse Falls, called Domtsang and Dongzhang waterfalls in Tibetan and Chinese languages respectively, are a collection of waterfalls in the Tawang district in Arunachal Pradesh, India, close to the border with the Tibet region of China. According to the local Buddhist tradition, the 108 holly water falls which originate from in-between the mountains symbolise the blessings of Guru Padmasambhava. The Chumi Gyatse Falls are close to the Line of Actual Control, the de facto border between China and India, just 250 metres away according to one account.
The Yangtse clash of 9 December 2022 occurred at night between the troops of the Indian Army and the Chinese People's Liberation Army (PLA) along their mutually contested Line of Actual Control (LAC) in the Yangtse region of Tawang in the Indian state of Arunachal Pradesh. Violent clashes ensued after the two armies confronted each other with nail-studded clubs and other melee weapons near positions on a border ridgeline in close vicinity of the revered Buddhist site of Chumi Gyatse Falls. The border incident marked the most serious clash between the two armies along their undemarcated frontier since the Galwan Valley clash in June 2020, which had led to the deaths of 20 Indian soldiers and an unknown number of dead on the Chinese side.
Tulung La (Tibetan: ཐུ་ལུང་ལ་, Wylie: thu lung la) is a border pass between the Tsona County in the Tibet region of China and India's Tawang district in Arunachal Pradesh. It is in the eastern part of the two districts, close to the Gori Chen cluster of mountains, on a watershed between the Tsona Chu river in Tibet and the Tawang Chu in the Tawang district. The watershed ridge forms the border between Tibet and India as per the McMahon Line. Tulung La provided an invasion route to China during the 1962 Sino-Indian War. It is also the scene of occasional clashes between the two sides.
