With the announcement, President Trump spelled out a new strategy for dealing with Iran, including new sanctions.
They are weighing a few different strategies just days before the next certification deadline.
President Donald Trump said, "We cannot abide by an agreement if it provides cover for the eventual construction of a nuclear program."
Iran re-elected its moderate president, Hassan Rouhani, over hard-line conservative challenger Ebrahim Raisi.
The Trump administration is sticking with the Iran nuclear deal, but still levying sanctions on Iran.
A new report says the U.S.-Iran prisoner swap also involved the Obama administration's decision to drop cases against 14 Iranian fugitives.
He bombed Syria. He won't label China a currency manipulator. He likes NATO. Now, he's extending what he called "the dumbest deal you can imagine."
Rex Tillerson says Iran is sticking to the terms of the agreement to curb its nuclear program. But he says President Trump still wants to review it.
Thirteen people and 12 entities are facing restrictions for involvement in Tehran's missile program.
Iran has managed to increase production since sanctions were lifted, but it desperately needs investors so it can update its out-of-date machinery.
The Iranian government released several American hostages in January 2016, and their release coincided with the U.S. airlifting millions in cash.
The U.S. has announced new sanctions against Iran's missiles just a day after lifting sanctions on the country's nuclear program.