I recently found this essay on how much is the total cost of the US nuclear weapons arsenal. The Department of Energy provided the nuclear material for free to the weapons manufacturers. The military industrial congressional complex created many more weapons than the military requested. Perhaps most ironic:
As a result, one great irony of the Cold War is that although the United States produced nuclear weapons en masse to destroy the Soviet Union, and vice-versa, the principal victims of each country’s nuclear weapons were its own citizens.