India also reported some military conflicts with China after the 1962 war. In late 1967, there were two incidents in which both countries exchanged fire in Sikkim. The first one was dubbed the Nathu La incident, and the other being Chola incident in which advancing Chinese forces were forced to withdraw from Sikkim, then a protectorate of India and later a state of India after annexation in 1975. In the 1987 Sino-Indian skirmish, both sides showed military restraint and it was a bloodless conflict. In 2017 the two countries once again were involved in a military standoff, in which several troops were injured. In 2020, soldiers were killed in skirmishes for the first time since the war ended.