The Sino-Indian War, also known as the China–India War or the Indo-China War, was an armed conflict between China and India that took place from October to November 1962. It was a military escalation of the Sino-Indian border dispute. The fighting was concentrated in two locations along the India-China border, the North-East Frontier Agency (NESA), and the Aksai Chin region, which were roughly 1,000 km (620 mi) apart. The conflict arose due to China's claims over the Aksai Chin and NESA, with both countries relying on different historical border agreements. India recognised the Johnson Line in the west and the McMahon Line in the east, while China did not recognise them.