Mainstream, VOL LIX No 13, New Delhi, March 13, 2021 Significance of Frontier State in India’s Geo-Strategic Space: A Study of Arunachal Pradesh | Jajati K. Pattnaik Friday 12 March 2021 by Dr Jajati K. Pattnaik Arunachal Pradesh, the frontier state of India, is poised to play a significant role in the geo-strategic space of India. It covers the largest geographical space among the eight sisters of India’s Northeast having geo-strategic significance for the country. The state is well located in the easternmost of the country by sharing international borders with Myanmar (520 km), China (1,080 km) and Bhutan (217 km). In this paper, the term geo-strategic is not merely confined to the strategic calculations, rather it is interpreted in the larger canvass of geo-economic space by locating Arunachal Pradesh through geo-economic corridors to promote India’s national interest as well as strengthen cross-border trade relations vis- a- vis Myanmar, Bhutan and China as well .