Iranian President Hassan Rouhani says Iran will begin keeping its excess uranium and heavy water, and he set a 60-day deadline for new terms to its nuclear deal before the country will resume higher uranium enrichment. Rouhani is seen here at a cabinet meeting in Tehran on Wednesday. Iranian Presidency Office/AP hide caption
German Chancellor Angela Merkel and U.S. Vice President Pence talk at the Munich Security Conference on Saturday. Alexandra Beier/Getty Images hide caption
People withdraw money from a bank machine in the Iranian capital Tehran's Grand Bazaar in November, months after President Trump announced in May he was withdrawing from the 2015 Iran nuclear deal and reimposing sanctions on the country. Atta Kenare/AFP/Getty Images hide caption
An exchange shop displays rates for various currencies in downtown Tehran last month. Iran is bracing for the restoration of U.S. sanctions on its vital oil industry set to take effect on Monday, as it grapples with an economic crisis that has sparked sporadic protests over rising prices, corruption and unemployment. Vahid Salemi/AP hide caption
People walk at the old main bazaar in Tehran, Iran, last month. The strained Iranian economy is bracing for the impact of new U.S. sanctions that went into effect Tuesday. Ebrahim Noroozi/AP hide caption
Secretary of State Mike Pompeo attends a news conference on the sidelines of the 51st ASEAN Foreign Ministers Meeting in Singapore, on Saturday. Joseph Nair/AP hide caption
Hua Qu, the wife of Chinese-American Xiyue Wang, poses with a portrait of her family in Princeton, N.J., on May 9. Families of Americans detained in Iran are hoping President Trump's decision to withdraw from the Iran nuclear deal will not make it harder to get their love ones freed. Matt Rourke/AP hide caption
An Airbus A321 airliner arrives at Tehran's Mehrabad International Airport during the delivery of the first batch of planes to Iran Air on Jan. 12, 2017. Europe's Airbus has a contract to provide 100 aircraft to the Iranian airline. Atta Kenare/AFP/Getty Images hide caption
The sun sets behind an oil pump in the desert oil fields of Sakhir, Bahrain. OPEC nations agreed to reduce their production, but energy experts say that renewed U.S. sanctions on Iran could derail their supply cut deal. Hasan Jamali/AP hide caption
U.S. Ambassador to Germany Richard Grenell (left) and German President Frank-Walter Steinmeier greet the media during Grenell's accreditation process at the Bellevue Palace in Berlin on Tuesday. Michael Sohn/AP hide caption
President Trump displays his presidential memorandum reinstating nuclear sanctions on Iran at the White House on Tuesday. Evan Vucci/AP hide caption
"The fact is this was a horrible one-sided deal that should have never, ever have been made," President Trump said Tuesday from the Diplomatic Reception Room of the White House. Evan Vucci/AP hide caption
President Hassan Rouhani speaks in a ceremony to mark Iran's National Nuclear Day, dedicated to the country's achievements in nuclear technology, in Tehran on April 9. Office of the Iranian Presidency via AP hide caption
Foreign Secretary Boris Johnson arrives in Downing Street for the weekly cabinet meeting last month in London. Dan Kitwood/Getty Images hide caption
President Trump and French President Emmanuel Macron during an appearance at the White House on Tuesday. Andrew Harnik/AP hide caption
Attendees hold signs and cheer during a Tea Party Patriots rally against the Iran nuclear deal in Washington, D.C., on Sept. 9, 2015. Pete Marovich/Bloomberg via Getty Images hide caption
Mohammad Javad Zarif, Iran's Foreign Minister, in New York City on April 23, 2018. Elias Williams for NPR hide caption
Mohammad Javad Zarif, the foreign minister of Iran, poses for a portrait. Elias Williams for NPR hide caption
CIA Director Mike Pompeo (right) is President Trump's choice to replace Rex Tillerson, who has been fired as secretary of state. Chris Kleponis/Pool/Getty Images; Joe Raedle/Getty Images hide caption
President Trump announced he would not recertify the Iran nuclear deal and warned that the U.S. could withdraw from it "at any time." Brendan Smialowski/AFP/Getty Images hide caption
President Trump on Friday stated that the Iran nuclear deal is not in the best interests for the security of the United States, but stopped short of withdrawing from the 2015 agreement. Drew Angerer/Getty Images hide caption
President Trump announces he will not recertify the Iran nuclear deal on Friday, ahead of Sunday's deadline. The deal is still in effect, but the president is pushing for a new strategy. Brendan Smialowski/AFP/Getty Images hide caption
President Trump speaks during a nomination announcement at the East Room of the White House on Thursday. Alex Wong/Getty Images hide caption
Iran's President Hassan Rouhani speaks at the United Nations in September. Kevin Hagen/Getty Images hide caption