evidence: Tawang is one of the most important districts of the Indian state of Arunachal Pradesh. It also has a geostrategic significance to India. China claims it as south Tibet. Hence, this dispute of territorial demarcation has sparked off geopolitical ramifications for India and China. In India, the Monpas explicitly state that they share border with Tibet, not China (www.economictimes.com, 22 April 2017). But the Tibetan narrative on Tawang has not gained attention in the context of India-China relations. This paper explores the Tibetan argument on Tawang which is deductively appended by historical insights relating to Tawang – Tibet relations. [...] Monyul was situated in the south of Tsona Dzong, east of Bhutan and north east of Assam. It was also rich in flora and fauna and natural lakes. Political and human geography of Monyul drastically changed today. Tawang became one of the smallest districts of the Indian state of Arunachal Pradesh. Political and administrative power of Tawang has been transferred to Itanagar, the capital city of Arunachal Pradesh. Furthermore, the Tawang administrative district is divided into two administrative units: Tawang and Kitpi. It is one of the most geopolitically significant districts in Arunachal Pradesh because it is considered as India’s Achilles’ heel.