Who is Jeff and why does he have nuclear weapons?

I saw a graph from CNN about the world's nuclear arsenal, and one figure immediately caught my eye.

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Who is Jeff?!

See the figure at the end there. Who is Jeff and why does he have as many nukes as Kim Jong?!

I googled around but could only find jokes about Jeff’s claiming nukes, like this one.

I finally found a real lead in a reddit post.

More googling lead me to:

Jeff stands for ‘Joint Evaluated Fission and Fusion File’ (JEFF). It is a collaboration to get accurate data on fusion and fission.

I can’t find anything that says they for sure have nuclear bombs, but that seems the most likely explanation for “who is Jeff and why does he have a nuclear arsenal.”

And as a reminder that nukes are scary…

Code, design, cook. Make stuff. Cookies. @BYU grad.

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