International armed conflict between China and India (ended late October 2024)

Historical Background

Origins and context 

The Sino-Indian frontier in the Himalayas is the world’s longest disputed border and is loosely defined by the so-called ‘Line of Actual Control’ (LAC), whose alignment and length remain contested and date back to the colonial era. The LAC comprises a western sector between eastern Ladakh and Aksai Chin, an eastern sector between Tibet and Arunachal Pradesh, and central portions interrupted by Nepal and Bhutan, with Sikkim also remaining contested. 

China’s annexation of Tibet and subsequent events 

China’s annexation of Tibet transformed the former India-Tibet frontier into a direct China-India military border. The 1954 agreement acknowledged Chinese sovereignty over Tibet but did not settle the boundary. Subsequent Chinese road construction through Aksai Chin, the Tibetan uprising, and India’s asylum for the Dalai Lama worsened relations and led to frontier incidents in 1959. 

1962 Sino Indian War and subsequent clashes 

Failed negotiations and India’s Forward Policy preceded the 1962 war, during which China advanced in both the western and eastern sectors and retained Aksai Chin, while the LAC remained undelimited. Later clashes and standoffs occurred in the 1960s, 1970s and 1980s, followed by renewed dialogue. 

Border management and recurrent confrontations 

From the late 1980s, China and India developed confidence-building and border-management mechanisms, but these did not delimit the LAC. Recurrent standoffs resumed in the 2010s, including at Doklam, a small, disputed plateau of less than 100 square kilometres, while the Belt and Road Initiative added a broader strategic dimension. 

May June 2020 crisis and persisting tensions 

The 2020 eastern Ladakh crisis led to major deployments, deadly clashes in Galwan, which marked the first fatal border encounter since 1975, and a prolonged inter-State crisis. Partial disengagement followed negotiations, but unresolved issues and continued military deployments kept tensions high. 

Key Developments (2023–2026)

From 2023 to mid-August 2026, no direct clashes or standoffs were reported between Chinese and Indian troops, apart from a 2026 skirmish at Taksing (eastern sector). Patrolling remained suspended in several eastern Ladakh areas, while both States maintained substantial deployments, expanded border infrastructure and continued dialogue until the October 2024 breakthrough agreement. 

1. Confrontation between Chinese Military and Ladakhi Herders in Kakjun/Skakjung: In January 2024, Chinese troops confronted Ladakhi herders in Kakjun/Skakjung over access to traditional grazing lands. Indian troops were absent, no injuries or damage were reported, and the herders were forced to leave the area. 
2. Patrolling Agreement and Completion of Previous Disengagement: In October 2024, China and India reached an unpublished agreement on patrolling along the LAC. The agreement completed the disengagement process initiated after the 2020 deadly clashes, provided for coordinated patrols and civilian grazing, and prevented face-to-face deployments, although both States maintained a military presence along the border. 
3. Gradual Normalization of Relations between China and India: Following the October 2024 agreement, military, political and diplomatic meetings resumed or expanded, including border mechanisms and confidence-building measures. Wider exchanges also resumed across pilgrimage, trade, flights, visas and investment. Relations were reframed more positively, but political tensions persisted.