India, March 26 -- Warfare in the twenty-first century has drastically changed; it is very different from what it was in earlier times. Gone are the days when war meant tanks, aircraft and artillery firing at army positions on the border and soldiers braving it on the frontline. Today the border has stretched everywhere - the whole country is a battlefield, and it is not just about artillery; it has several new dimensions which were hitherto unknown. Cyber-attacks, economic blockades, internet disruption and psychological warfare have now taken centre stage. Any country that runs on foreign dependencies is vulnerable. Ironically, a country that is digitally advanced is more prone to outages. This is no science fiction; these are the lesso...