New Delhi: What’s the decimation of the feared Russian tanks in Ukraine telling us? Is the tank, along with other armoured fighting vehicles as we’ve known them, headed the same way as the medieval war elephant? Lately, besides the numerous pictures and videos of burning, exploding or wrecked Russian tanks, we’ve also been witnessing some contrasting sights. Consider these two: The Tank X drove down a pleasant country lane outside Tallinn, Estonia, this summer, its engine humming like a well-tuned sports car. Soon, its sensors, controlled by artificial intelligence systems, detected a threat and the tank alerted a remote human...