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The 1967 Sino-Indian skirmish also known as the Chola incident, was a military conflict between Indian troops and members of the ChinesePeople's Liberation Army who had infiltrated on 1st October, 1967 in Sikkim, then a protectorate of India. On 10 October, once again both sides had the conflict, the Defence Minister of India, Sardar Swaran Singh addressed that government is looking after the developments across the borders. During whole conflict Indian losses were 88 killed, and 163 wounded, while Chinese casualties were 300 killed and 450 wounded in Nathula, and 40 in Chola. The end of the battle saw the Chinese Army leave Sikkim after getting defeated by Indian Troops.
Sikkim became an Indian state in 1975, which was not recognized by China. In 2003, China recognized Sikkim as an Indian state, on the condition that India accepted Tibet Autonomous Region as a part of China. This mutual agreement led to a thaw in Sino-Indian relations.