Governments use depleted uranium to fuel terrorism and raise taxes. Tax money is diverted in pockets of heads of state through overbilling in tendering and retrocession of the excess on offshore accounts (their own, not the companies'). Why is depleted uranium not needed for armour piercing ? Nuclear reactors work like any fire : carbon and hydrogen increase energy output. As in a Diesel motor, pressure also helps. Here https://en.wikipedia.org/wiki/Critical_mass#Changing_the_point_of_criticality -> "Varying the density of the mass The higher the density, the lower the critical mass." -The production of LIGHT at the impact of antitank weapons proves it. This is used in ALL nuclear bombs. And it allows to reach a much more limited supercriticity with very little pieces of highly enriched uranium or plutonium. A few grams only, that are used indeed in all CONVENTIONAL antitank warheads. So they do not need DU. DU is added since Vietnam for genocide and ecocide ! Iraq, Afghanistan, Pakistan, Yemen, Syria… Even a retired French Army general (P-M Gallois) said it is a "crime against humanity" !