Just imagine a scenario when two nuclear powered neighbors comes at a point of nuke exchange. Each and every BM launched against India would be countered by ABM. But those which would pass though would show its effect of whether being conventional or Nuclear tipped. Now in case of such a warfare, India too would be ready for any eventuality. So a nuke warhead would give India the very right of massive retaliation. As far as C& C network is concerned, if you are aware of India's plan in this, you would have been least worried of it.