India is in real trouble with its weapons systems. Decades of over-reliance on cheap Russian equipment—equipment that is currently failing the battlefield test in Ukraine—risks exposing India’s military as little more than a paper tiger. It’s a tough problem. Nearly 60 percent of India’s defense equipment is Russian made, but with Moscow struggling to replace weapons lost in Ukraine, India’s era of easy access to cheap military equipment is over. Worse for New Delhi, Ukraine is demonstrating that Russia focused on all the wrong things in weapons development. Designed to support an older way of warfare, Russian gear has struggled...