evidence: Let’s take the real-life example of the Gandak River, known as Narayani in Nepal. Since the colonial period, the river has been the international border between India (Bihar) and Nepal. But as time marched on, the river changed its course and the tiny village of Susta, which was initially on the west bank of the Gandak in Nepal, now falls on the east bank of the Gandak, an area under India’s dominion. This has sparked a debate regarding whether the nationalities of the local residents of Susta should change owing to the river’s changing course. [...] The settlement of Susta was once perched firmly on the west bank of the Narayani River, long considered the border between Nepal and India. But the river has changed course, cutting persistently into Nepali territory. Susta today finds itself on the east bank of the Narayani. India maintains that the new course of the river is the international boundary while Nepal disagrees. Susta, thus, remains contested — claimed by Nepal while hemmed in on three sides by India and on the other by the Narayani. There is the ‘Save Susta Campaign,’ a local movement protesting Indian advancement, but locals are more concerned about the advancing Narayani river. Every monsoon, the Narayani expands further, eating into hundreds of hectares of farmland. "How many battles must we fight?" asks Laila Begum, a Susta local.