few years back i had a chat with a BSF officer who was then posted at maldah distt.of wesr bengal.he told me that it is very difficult to guard this border not as both sides have similar culture and language but due to this starking fact that both sides had bangladesh nationals.according to his prediction in next 20 years india is bound to loose a major part of this territory and will not be able to recover as for that indian forces are not trained to kill civilians.