From New York Times, I'm Michael Babaro. This is Adali.

Today, a nuclear deal with Iran is essential to President Biden's foreign policy.

So why did one of America's closest allies just try to blow it up?

My colleague, White House reporter David Sanger, on the difficult diplomatic triangle of the US,

Iran, and Israel. It's Monday, April 19th.

David, describe what happened in Iran last Sunday.

Oh, Michael, it's still a little bit mysterious to us, but here's what we do know.

There's a giant nuclear fuel enrichment site called Natanz in Iran, and that plant is basically

like a military base. It's surrounded by barbed wire. There's anti-aircraft all over the place,

right? There's a number of different buildings, but the central one looks almost like a warehouse.

And deep underground, 25 feet underground, is something called the centrifuge hall.

This is where these giant silvery machines stand in neat rows, spinning away at supersonic speeds,

turning uranium gas into an enriched product. If you enrich it to just like 3% enrichment,

you can use it for producing nuclear power. But if you keep going, you can use it to build a nuclear

bomb. And that's why this has always been a place that the US, Israel, the Europeans, everyone

is focused on. There are probably more satellites looking at this building at any given time than

any other spot on Earth. And a week ago, Sunday, in the early morning hours, when there was no one

around. An explosion at the Natanz nuclear facility destroyed an internal power system. It could

take up to nine minutes. Some kind of giant explosion ripped through the system and appeared to take out

the power grid that keeps massive amounts of electricity flowing to these machines.

It happened just hours after Iran launched a new set of brand new advanced centrifuges for

foster uranium enrichment. We don't know if that explosion was caused by someone placing explosives

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