[PapaBear3625]

But how certain are we of uranium reserves and what is their location?

Use breeder reactors to turn U238 into plutonium and use the plutonium as fuel. If it's on a military reservation, we can have tight control on the fuel

[P-40]

That would solve two problems at once, power needs and storage needs. From what I understand, the product of the breeder reactors can be turned into a glassy substance that would not be good for a bomb unless you had some serious technological skills.