The Line of Actual Control (LAC), in the context of the Sino-Indian border dispute, is a notional demarcation line: "By the end of the month, Indian and Chinese media had focused attention on several points along the Indian territory of Ladakh in the western sector of the disputed border, known as the Line of Actual Control. In this sector, the official name for the boundary is a misnomer: There is no agreement on where any "line" is, nor is there a clear mutual delineation of the territory under "actual control" of either party".: "The entire length of the 4,056 km Sino-Indian border is disputed by China and exists today as a notional Line of Actual Control. This line is not marked on the ground, and the two countries do not share a common perception of where the line runs".Ananth Krishnan, Line of Actual Control |India-China: the line of actual contest , 13 June 2020: "In contrast, the alignment of the LAC has never been agreed upon, and it has neither been delineated nor demarcated. There is no official map in the public domain that depicts the LAC. It can best be thought of as an idea, reflecting the territories that are, at present, under the control of each side, pending a resolution of the boundary dispute".: "An unending source of friction and tension between China and India has been the undefined nature of the LAC... Connecting the points effectively held by either China or India, the two governments have notionally drawn the segments making up the LAC. I write "notionally" because the resulting line has not been mutually demarcated on the ground; on the contrary, in some sectors the militaries of the nation notionally claiming that area as part of the territory under their actual control have never set foot on it, or have done so only temporarily, or only recently". that separates Indian-controlled territory from Chinese-controlled territory on their mutual border.. The concept was introduced by Chinese premier Zhou Enlai in a 1959 letter to Jawaharlal Nehru as the "line up to which each side exercises actual control", but rejected by Nehru as being incoherent. Subsequently, the term came to refer to the line formed after the 1962 Sino-Indian War..
The LAC is different from the borders claimed by each country in the Sino-Indian border dispute. The Indian claims include the entire Aksai Chin region, and the Chinese claims include Arunachal Pradesh/Zangnan. These claims are not included in the concept of "actual control".
The LAC is generally divided into three sectors:. the western sector between Ladakh on the Indian side and the Tibet and Xinjiang autonomous regions on the Chinese side. This sector was the location of the 2020 China–India skirmishes ; the middle sector between Uttarakhand and Himachal Pradesh on the Indian side and the Tibet Autonomous Region on the Chinese side ; The eastern sector between Arunachal Pradesh/Zangnan on the Indian side and the Tibet Autonomous Region on the Chinese side. This sector generally follows the McMahon Line.
The term "line of actual control" originally referred only to the boundary in the western sector after the 1962 Sino-Indian War, but during the 1990s came to refer to the entire de facto border..
Overview The term "line of actual control" is said to have been used by Chinese premier Zhou Enlai in a 1959 note to Prime Minister of India Jawaharlal Nehru.. The boundary existed only as an informal cease-fire line between India and China after the 1962 Sino-Indian War. In 1993, India and China agreed to respect the "Line of Actual Control" in a bilateral agreement, without demarcating the line itself..
In a letter dated 7 November 1959, Zhou Enlai proposed to Jawaharlal Nehru that the armed forces of the two sides should withdraw 20 kilometres from the so-called McMahon Line in the east and "the line up to which each side exercises actual control in the west". Nehru rejected the proposal stating that there was complete disagreement between the two governments on what territory each side controlled:.
Scholar Stephen Hoffmann states that Nehru was determined not to grant legitimacy to a concept that had no historical validity nor represented the situation on the ground. During the Sino-Indian War (1962), Nehru again refused to recognise the line of control: "There is no sense or meaning in the Chinese offer to withdraw twenty kilometres from what they call "line of actual control". What is this "line of control"? Is this the line they have created by aggression since the beginning of September? Advancing forty or sixty kilometres by blatant military aggression and offering to withdraw twenty kilometres provided both sides do this is a deceptive device which can fool nobody"..
Zhou responded that the LAC was "basically still the line of actual control as existed between the Chinese and Indian sides on 7 November 1959. To put it concretely, in the eastern sector it coincides in the main with the so-called McMahon Line, and in the western and middle sectors it coincides in the main with the traditional customary line which has consistently been pointed out by China.".
The term "LAC" gained legal recognition in Sino-Indian agreements signed in 1993 and 1996. The 1996 agreement states, "No activities of either side shall overstep the line of actual control".Sali, M.L., (2008) India-China border dispute , p. 185, . However, clause number 6 of the 1993 Agreement on the Maintenance of Peace and Tranquility along the Line of Actual Control in the India-China Border Areas mentions, "The two sides agree that references to the line of actual control in this Agreement do not prejudice their respective positions on the boundary question"..
The Indian government claims that Chinese troops continue to illegally enter the area hundreds of times every year, including aerial sightings and intrusions."Chinese Troops Had Dismantled Bunkers on Indian Side of LoAC in August 2011", India Today, 25 April 2013, retrieved 11 May 2013.. In 2013, there was a three-week standoff (2013 Daulat Beg Oldi incident) between Indian and Chinese troops 30 km southeast of Daulat Beg Oldi. It was resolved, and both Chinese and Indian troops withdrew in exchange for an Indian agreement to destroy some military structures over 250 km to the south near Chumar that the Chinese perceived as threatening."India Destroyed Bunkers in Chumar to Resolve Ladakh Row" , Defence News, 8 May 2013, retrieved 11 May 2013.
In October 2013, India and China signed a border defence cooperation agreement to ensure that patrolling along the LAC does not escalate into armed conflict.China, India sign deal aimed at soothing Himalayan tension .
In October 2024, India announced that it had reached an agreement over patrolling arrangements along the Line of Actual Control (LAC) in the border area, which would lead to disengagement and resolution of the long-running conflict that began in 2020..
Evolution of the LAC Predecessors
1956 claim line
What is referred to as the "1956 claim line" of China was in fact the border marked in the Big Map of the People's Republic of China published in 1956. Indian officials state that its alignment coincides with the 1947 Republic of China map. In a letter of 17 December 1959, Zhou Enlai asserted that the 1957 map "correctly shows the traditional boundary between the two countries in this sector." Scholar Leo Rose also comments that the appears to have been issued after China decided to build a road through Aksai Chin.
This alignment includes Aksai Chin proper in Chinese territory, and leaves the Karakoram Range along with most of its rivers that debouch into the Indus river system. These include the Chip Chap River, Burtsa Nala, Jeong Nala, and Galwan River. Chang Chenmo is the only river that is disected, near Kongka La, but includes within India its tributaries, Kugrang and Changlung. (See Map 1) The traditional border at Lanak La was likely moved up to Kongka La in order to prohibit Indian patrol from reaching up to the former, which was seen as being too close to the Aksai Chin road. The failure of Indian patrols to appreciate this Chinese position led to the 1959 Kongka La incident.
1960 claim line
Claimed LAC of 7 November 1959
The date of 7 November 1959, on which the Chinese premier Zhou Enlai alluded to the concept of "line of actual control", achieved a certain sanctity in Chinese nomenclature. But there was no line defined in 1959. Scholars state that Chinese maps had shown a steadily advancing line in the western sector of the Sino-Indian boundary, each of which was identified as "the line of actual control as of 7 November 1959".: "For India, the determination of the line from which the Chinese were to withdraw was of crucial importance since in this sector Chinese maps over the years had shown steadily advancing claims, with quite different lines each identified as 'the line of actual control as of 7 November 1959'.": "In fact, the Chinese claim that their 1956 and 1960 maps were 'equally valid' was soon used to define the 1959 'line of actual control' as essentially the border shown on the 1960 map—thus incorporating several thousand additional square miles, some of which had not been seized until after the hostilities had broken out in October, 1962.": "Furthermore, the Chinese claim line differed greatly from any line held by them on 7 November 1959 and reflected their efforts to establish claims to Indian territory by force, both before and after their massive attack on Indian outposts and forces on 20 October 1962. In some places, the line still went beyond the territory that the invading Chinese army had reached".
On 24 October 1962, after the initial thrust of the Chinese forces in the Sino-Indian War, the Chinese premier Zhou Enlai wrote to the heads of ten African and Asian nations outlining his proposals for peace, a fundamental tenet of which was that both sides should undertake not to cross the "line of actual control". This letter was accompanied by certain maps which again identified the "line of actual control as of 7 November 1959". Margaret Fisher calls it the "line of actual control as of 7 November 1959" as published in November 1962. See Fig. 1, p. 592 Scholar Stephen Hoffmann states that the line represented not any position held by the Chinese on 7 November 1959, but rather incorporated the gains made by the Chinese army before and after the massive attack on 20 October 1962. In some cases, it went beyond the territory the Chinese army had reached.
India's understanding of the 1959 line passed through Haji Langar, Shamal Lungpa, and Kongka La (the red line shown on Map 2).Chinese Aggression in Maps: Ten maps, with an introduction and explanatory notes , Publications Division, Government of India, 1963. Map 2.
Even though the Chinese-claimed line was not acceptable to India as the depiction of an actual position,Inder Malhotra, The Colombo "compromise", The Indian Express, 17 October 2011. "Nehru also rejected emphatically China's definition of the LAC as it existed on November 7, 1959." it was apparently acceptable as the line from which the Chinese would undertake to withdraw 20 kilometres. Despite the non-acceptance by India of the Chinese proposals, the Chinese did withdraw 20 kilometres from this line, and henceforth continued to depict it as the "line of actual control of 1959"..