Line of Actual Control
The Line of Actual Control (LAC) is a demarcation line that separates Indian-ruled lands from Chinese-held territory. It is the effective border between India and the People's Republic of China (PRC). The LAC is 4,056-km long and traverses four Indian states: Jammu and Kashmir, Uttarakhand, Himachal, and Sikkim. On the Chinese side, the line traverses the autonomous province of Tibet. The demarcation existed as the informal cease-fire line between India and China after the 1962 conflict till 1993, when its existence was officially accepted as the 'Line of Actual Control' in a bilateral agreement. However, Chinese scholars claim that the Chinese Prime Minister Zhou Enlai first used the phrase in a letter addressed to Indian Prime Minister Jawaharlal Nehru dated 24 October 1959.
Although no official boundary had ever been negotiated between China and India, Indian government even today claims that the Johnson Line of 1865 is the effective border between China and India while the PRC government considers the Macartney-MacDonald Line of 1899 as the accepted boundary.
In a letter dated 7 November 1959 Zhou told Nehru that the LAC consisted of "the so-called McMahon Line in the east and the line up to which each side exercises actual control in the west". During the Sino-Indian War (1962), Nehru refused to recognise the line of control: "There is no sense or meaning in the Chinese offer to withdraw twenty kilometers 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 kilometers by blatant military aggression and offering to withdraw twenty kilometers 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." The Indian government claims that Chinese troops continue to illegally enter the area hundreds of times every year. In 2013 there was a three week standoff 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. Later the same year BBC reported that Indian forces mistook planets for Chinese spy drones for six months. They recorded 155 such intrusions. Later the planets were identified by Indian Institute of Astrophysics as Venus and Jupiter. In October 2013, India and China signed a border defense cooperation agreement to ensure patrolling along the LAC does not escalate into armed conflict.
- Line of Actual Control
- "Another Chinese intrusion in Sikkim", OneIndia, Thursday, 19 June 2008. Accessed: 2008-06-19.
- Agreement On The Maintenance Of Peace Along The Line Of Actual Control In The India-China Border. 
- Sino Indian Relations.  "India-China Border Dispute". GlobalSecurity.org.
- Verma, Colonel Virendra Sahai. "Sino-Indian Border Dispute At Aksai Chin - A Middle Path For Resolution". Retrieved 28 August 2013.
- Maxwell, Neville (1999). "India's China War". Archived from the original on 2008-08-22. Retrieved 2008-10-21.
- Chou's Latest Proposals"
- Sali, M.L., (2008) India-China border dispute, p. 185, ISBN 1-4343-6971-4.
- "Chinese Troops Had Dismantled Bunkers on Indian Side of LoAC in August 2011". India Today. April 25, 2013. Retrieved May 11, 2013.
- Defense News. "India Destroyed Bunkers in Chumar to Resolve Ladakh Row". Defense News. May 8, 2013. Retrieved May 11, 2013.
- "India: Army 'mistook planets for spy drones'". BBC. 25 July 2013. Retrieved 27 July 2013.
- Reuters. China, India sign deal aimed at soothing Himalayan tension
- Why China is playing hardball in Arunachal by Venkatesan Vembu, Daily News & Analysis, 13 May 2007