Mark Dubowitz

So if you're going to enrich to 3.67%, enrich uranium, that's for civilian nuclear power.

But when you do that, you've basically 70% of what you need to get to weapons grade.

So you've done all the steps, 70% of the steps in order to get to weapons grade uranium.

If you enrich to 20%,

you are now at 90% of what you need to get to weapons-grade uranium.

Now, why would you need 20%?

You may need it for something like a research reactor, right?

Iran has, correct.

Iran has a Tehran research reactor for medical isotopes.

Now you can, by the way, you can buy those isotopes from abroad or you can produce them at home.

If you're going to enrich to 60%,

then you've done 99% of what you need to get to weapons-grade uranium.

And then 90% is, quote, weapons-grade uranium.

By the way, you can use 60% to actually deliver a crude nuclear device.

That has been done in the past.

But you want to get to, quote, 90%.

That's weapons-grade uranium as Scott's defining it.

But just again, to clarify,

These huge stockpiles of 60% that Iran has accumulated, this 16, 17 bombs worth of 60%, is 99% of what they need for weapons grade.

So I just wanted to explain that.