The war with Iran has been framed, in large part, as a mission to stop a nuclear threat.

Here is Secretary of Defense, Pete Hegsef, at a White House press conference on March 24th.

The President has made it clear that you will not have a nuclear weapon.

The War Department agrees, our job is to ensure that, And so we're keeping our hand on that throttle.

But if ending Iran's quest for nuclear weapons is the goal,

the current picture remains unclear, which raises the question,

has a war set back Iran's nuclear ambitions or just made them harder to see?

Today, a conversation with frontline Sebastian Walker Walker, whose 2025 film strike on Iran

the nuclear question, asked many of these questions before the latest war between Israel and the

United States and Iran broke out. He's updated his film and he's here to discuss it with us.

I'm Rainy Ernst & Roth, editor-in-chief and executive producer

of Frontline, and this is the Frontline Dispatch. Seb, welcome to the Frontline Dispatch.

Hey, thanks. Good to be here. I mean, after all, this is your third time on the dispatch since February.

You're becoming my one regular.

Well, there's a lot that's been happening.

Well, we're really pleased with that in mind that you've continued your investigation,

reopening strike on Iran to trace the current U.S. Israel attacks on Iran.

Tell me what's changed since the original film and how you went

about reporting this. Well, there's obviously been a huge amount of developments on the story.

I mean, it's still unfolding right now. It's actually, you know, a challenge to kind of keep up

with it. We're doing as much as we can to kind of catch up with

the story in all sorts of different ways. Now, something in particular that you're going to have

...