India is constructing the India -- Bangladesh barrier to prevent smuggling of narcotics .
The India -- Bangladesh barrier is a 3,406 - kilometre ( 2,116 mi ) fence of barbed wire and concrete just under 3 metres high .
India is constructing the India -- Bangladesh barrier , a 3,406 - kilometre ( 2,116 mi ) fence of barbed wire and concrete just under 3 metres high , to prevent smuggling of narcotics .