From the New York Times, I'm Michael Wavaro.

This is The Daily.

Today, Iran is warning that it may resume production on its nuclear program,

reviving a crisis that had been contained by the signing of the Iran nuclear deal four years ago.

How one man within the U.S. government may have intentionally brought us to this point.

It's Monday, May 13.

Mark Landler, tell me how we got to this point in a relationship between the U.S. and Iran.

Well, Michael, the story really starts almost exactly a year ago.

Today, I want to update the world on our efforts to prevent Iran from acquiring a nuclear weapon.

When President Trump finally makes good on a pledge he had made during the 2016 campaign.

I am announcing today that the United States will withdraw from the Iran nuclear deal.

Recall, the Iran nuclear deal was signed between Iran on the one side,

the United States and three European countries, Britain, France and Germany.

The idea behind the deal was in return for deferring whatever nuclear ambitions it had,

Iran was going to be released from these very own resanctions that the U.S. and the international community had imposed on it.

As a result, it was going to be able to build up the rest of its economy

even while accepting that its nuclear program was going to be hindered for this period of time roughly 15 to 20 years.

Tonight, the breaking news, a major shake-up at the White House moments ago.

We are just learning.

At the same time that President Trump is making good on this campaign promise to pull the United States out of this deal,

you have a new personality, a new figure entering the White House.

National Security Advisor, H.R. McMaster, is gone.

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