Nathu La and Cho La incidents

The Nathu La and Cho La incidents (1 – 10 October 1967) were military conflicts between India and China in the Himalayan Kingdom of Sikkim, then an Indian protectorate. The Chinese People's Liberation Army infiltrated parts of Sikkim on 1 October 1967, but was repulsed by the Indian Army by 10 October. During the Cho La and Nathu La incidents, Indian losses were 88 killed in action and 163 wounded, while Chinese casualties were 340 killed in action and 450 wounded.

The end of the battle saw the Chinese troops retreating from Sikkim after being defeated by Indian troops.

Sikkim became an Indian state in 1975, which was not recognised by China. In 2003, China recognised Sikkim as an Indian state, on condition that India accept that the Tibet Autonomous Region was a part of China, even though India had already done so back in 1953. This mutual agreement led to a thaw in Sino-Indian relations.