JUDY WOODRUFF:

A new deadline looms this weekend for President Trump to certify whether the 2015 nuclear agreement with Iran is in the interests of the United States, and if Iran is or is not complying with it.

But how do Iranians see this deal and President Trump's tough words for the Islamic republic?

From Tehran, and in partnership with the Pulitzer Center on Crisis Reporting, special correspondent Reza Sayah reports.