Resolution in U.S. Senate to recognise McMahon Line as international boundary

Contact Counsellor

Last Updated17/03/2023

Two United States Senators have introduced a bipartisan resolution reiterating that the US recognises the McMahon Line as the international boundary between China and India in Arunachal Pradesh.
The resolution reaffirms India’s well-known and established position that Arunachal Pradesh, which China calls ‘South Tibet’, is an integral part of India.

The McMahon Line serves as the de facto boundary between China and India in the Eastern Sector.
It specifically represents the boundary between Arunachal Pradesh and Tibet, from Bhutan in the west to Myanmar in the east.

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China has historically disputed the boundary and claims the state of Arunachal Pradesh as part of the Tibetan Autonomous Region (TAR).

The McMahon Line was drawn during the Simla Convention of 1914, officially described as the Convention Between Great Britain, China, and Tibet.
The McMahon Line delimited the respective spheres of influence of Tibet and Northeast India and Northern Myanmar.

The border in this region was undefined prior to the signing of the convention.
The convention attempted to settle the question of Tibet’s sovereignty and avoid further territorial disputes in the region.
The treaty divided the Buddhist region into “Outer Tibet” and “Inner Tibet”:
Outer Tibet would remain in the hands of the Tibetan Government at Lhasa under Chinese suzerainty, though China was not allowed to interfere in its affairs.
Inner Tibet would be under the direct jurisdiction of the newly formed Republic of China.
It also determined the border between China proper and Tibet as well as Tibet and British India.
While a draft convention was agreed upon by all three countries on April 27, 1914, China immediately repudiated it.
The final convention was only signed by McMahon on behalf of the British government and Shatra on behalf of Lhasa.
China did not consent to the convention, arguing that Tibet had no independent authority to enter into international agreements.