U.S. refusing funding to Kazakhstan for it to secure its 3 tons of plutonium

The 330 tons of spent nuclear fuel contain more than 3 tons of plutonium enriched to more than 90 percent. That's better-than-usual weapons-grade but would require extensive processing to be made into bombs.
The fuel has been cooling for so long and was so lightly irradiated to begin with that it is no longer radioactive enough to be "self-protecting" against theft, according to the Washington-based Nuclear Threat Initiative, an anti-proliferation organization.