Why did the Sino-Indian War begin in 1962?

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The Sino-Indian War of 1962 was primarily caused by unresolved border disputes between India and China, specifically regarding the Aksai Chin region in Ladakh and the McMahon Line in the east.123

Tensions escalated due to several key factors:

  • Territorial Disputes: China rejected colonial-era boundary arrangements, including the McMahon Line, which it viewed as a product of British "imperialist aggression". Conversely, India upheld these boundaries as official.43
  • Strategic Infrastructure: Relations deteriorated after India discovered that China had built a military road through the remote Aksai Chin region to connect Tibet with Xinjiang.13
  • Asylum for the Dalai Lama: In 1959, India granted asylum to the 14th Dalai Lama following a violent uprising in Tibet. China viewed this as interference in its internal affairs.23
  • Forward Policy: In 1961, India adopted a "Forward Policy," establishing military outposts along the contested border, which led to frequent, often violent, skirmishes between the two nations.23

These factors culminated in a full-scale conflict on October 20, 1962, when Chinese forces launched coordinated attacks across the disputed boundaries.13