Interesting discussion. But can not but feel that BD defense doctrine is wrong. Glad these old timers time has passed.
BD needs to be able to take the fight to the enemy. We need to develop offensive capacity. Missiles, submarines and a lethal airforce is the order of the day. Self sufficiency in small arms is not going to cut it.
BD is a fortress country, no country with our population can be invaded and controlled by anyone. However let's not put such hypothesis to test. Let's develop capacity to take the fight into enemies territory so that enemies body bags are full before they come anywhere near us.