Aksai Chin

Aksai Chin is a sparsely inhabited cold desert plateau, averaging over 5,000 metres in elevation, lying at the junction of the Tibetan Plateau and the Karakoram range. It covers roughly 38,000 square kilometres and forms the western sector of the disputed India–China boundary. India claims the territory as part of the Union Territory of Ladakh (constituted on 31 October 2019 following the abrogation of Article 370); China administers it as part of Hotan Prefecture in the Xinjiang Uyghur Autonomous Region. The dispute is rooted in the absence of an agreed colonial-era boundary: the British proposed two competing lines — the Johnson Line of 1865, which placed Aksai Chin within Kashmir, and the Macartney–MacDonald Line of 1899, which assigned most of it to China. India relies on the Johnson Line; China rejects both as never having been mutually accepted, the border instead being governed today by the Line of Actual Control (LAC).

The territory's strategic value lies in its connectivity. In the 1950s China constructed the Xinjiang–Tibet Highway (China National Highway G219) across Aksai Chin, linking Xinjiang to Tibet; India publicly learned of the road only in 1957–58, an episode that crystallised the boundary dispute. Aksai Chin was the principal western-sector theatre of the Sino-Indian War of October–November 1962, after which China retained physical control. India's claim is reinforced by Parliament's unanimous resolution of 14 November 1962 pledging to recover all territory occupied by China. Pakistan further complicated the picture through the Sino-Pakistan Boundary Agreement of 2 March 1963, ceding the Shaksgam Valley (the Trans-Karakoram Tract) to China — territory India also claims.

Boundary management is governed by a series of confidence-building agreements: the 1993 Agreement on Maintenance of Peace and Tranquillity along the LAC, the 1996 Agreement on Confidence-Building Measures in the Military Field, and the 2005 Protocol and political-parameters agreement. These mechanisms were severely strained by the Galwan Valley clash of 15 June 2020 in the adjacent eastern Ladakh sector, the deadliest border incident in decades, prompting multiple rounds of Corps Commander–level talks and partial disengagement. As of 2026 Aksai Chin remains under Chinese administration with no negotiated settlement; the Special Representatives mechanism (established 2003) continues as the principal diplomatic channel, and a late-2024 patrolling arrangement eased tensions at Depsang and Demchok.

For the examination, Aksai Chin recurs across Geography (physiographic location, drainage of the Indus system, cold-desert ecology), Modern History/Polity (the 1962 war, Parliament's 1962 resolution, the 2019 Ladakh reorganisation), and International Relations/China Foreign Policy papers. UPSC and CSS candidates should be able to distinguish the Johnson and Macartney–MacDonald Lines, locate the western, middle and eastern sectors of the LAC, and explain why Aksai Chin (unlike Arunachal Pradesh) carries little settled population but immense strategic logistics value. Typical question angles ask for comparison of the three boundary sectors, the legal basis of competing claims, or the institutional architecture of India–China border negotiations.