China-India border fight latest in long and troubled history between the Asian giants
- With both sides accusing the other of ignoring agreements struck over past 30 years, experts say situation is complex
- One problem is lack of demarcated border, just a traditional line formed gradually over thousands of years

Chinese foreign ministry spokesman Zhao Lijian levelled a string of accusations against New Delhi last week, including an assertion that “the adventurous acts of the Indian army seriously violated the agreements reached between the two countries on the border issue”.
A day later, his Indian counterpart Anurag Srivastava hit back, accusing China of violating various bilateral agreements – in particular a landmark 1993 treaty – by amassing large numbers of troops along the disputed Himalayan border since early May. The issue, he claimed, was “at the heart” of the latest row.

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Three Indian soldiers killed in border clash with Chinese troops
Since 1993, China and India have signed at least five treaties over their unmarked border, known as the Line of Actual Control (LAC), and a few other protocols to ensure peace and tranquillity in the border areas after decades of strenuous talks which began in 1981.
“It is a fact that there is no demarcated border historically between our two countries, other than a traditional, customary line formed gradually in the past two millennia,” said Wang Dehua, an expert on India at the Shanghai Municipal Centre for International Studies.