“Were the United States to go to war with Russia, both sides could draw on deadly weapons the world has never seen on a battlefield. On the Russian side, there are new and smaller tactical nuclear weapons. To counter them, the U.S. Army is taking another look at a ‘devastating’ weapon it first tested in 2013: the Kinetic Energy Projectile, or KEP, a tungsten-based charge moving at three times the speed of sound that can destroy anything in its path.”
Source: US Army Exploring ‘Devastating’ New Weapon For Use In War with Russia – Nextgov.com