Manipur and Myanmar around Champhai, Bangladesh beyond Lunglei: the borders of Mizoram
Background
Road and rail projects in the hills keep Mizoram's frontier districts in the news, and two of them sit against foreign countries. In the north-east corner of the State, Champhai district has Manipur on its north and Myanmar on its east and south. At the other end, in the southern part of the State, Lunglei district shares an international border with Bangladesh on its west. So the eastern and southern edge of Mizoram faces Myanmar and the western edge faces Bangladesh. Inside the State, Lunglei is bounded by Siaha, Lawngtlai, Serchhip, Mamit and Hnahthial districts. Champhai is a frontier district of the State's eastern side, as Lunglei is of its western side. A State with two international borders carries weight in both trade and security. That is why so much central road building in Mizoram is aimed at the border districts.
In plain words
Frontier district A district on an international boundary — A district whose edge is the country's own border.