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What is LINE OF ACTUAL CONTROL (LAC)?

What is LINE OF ACTUAL CONTROL (LAC)?

About LAC

  • It is the non-demarcated conceptual line separating Indian-controlled and Chinese-controlled territories.
  • India perceives the total LAC length to be 3,488 km, whereas China recognizes only ~2,000 km.
  • India’s official claim line (includes Aksai Chin and Gilgit-Baltistan) is based on Survey of India maps and differs from the LAC.
  • China treats the LAC as its claim line, except in the East where it claims Arunachal Pradesh.

Major Sectors of the LAC

  • Western (Ladakh): ~1,597 km; includes friction points like Depsang, Demchok, Galwan, and Pangong Tso.
  • Middle (HP & Uttarakhand): ~545 km; least disputed; the only sector where maps were mutually exchanged.
  • Eastern (Arunachal & Sikkim): ~1,350 km; follows the 1914 McMahon Line which China rejects.

LAC vs Line of Control (LoC)

  • LoC (Pakistan): Emerged from the 1948 ceasefire; formalized by the 1972 Shimla Agreement; legally delineated on signed maps.
  • LAC (China): Proposed by China in 1959 and accepted by India in 1993; lacks legal delineation or physical demarcation.
Key Boundary Lines & Treaties 1897 Johnson-Ardagh Line: Placed Aksai Chin in Jammu & Kashmir; formed the baseline for India’s 1954 maps. 1914 Shimla Accord (McMahon Line): Defined the Eastern border; initialed by China but never ratified. 1993 Peace & Tranquillity Agreement: India accepted the LAC concept to maintain peace without surrendering territorial claims.

Conclusion

The LAC is a 3,488 km non-demarcated conceptual boundary between India and China, legally distinct from the signed LoC with Pakistan, and managed via bilateral peace agreements pending final settlement.

This concept has been elaborately discussed in the following article:

India–China LAC Talks: Clarifying Perceptions and Managing Border Tensions