Iran's supreme leader, Ayatollah Ali Khamenei, speaks with a group of Revolutionary Guards and their families in Tehran on April 9. Tensions between Iran and the U.S. have escalated recently following Iran's shootdown of a U.S. drone and U.S. cyberattacks against an Iranian intelligence group. On Monday, President Trump announced financial sanctions against Khamenei and other top officials. Office of the Iranian Supreme Leader via AP 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
A woman in Tehran stands in front of a wall plastered with posters of Iranian President Hassan Rouhani, whose re-election bid will have its decisive moment Friday — unless, of course, the voting results in a runoff. Atta Kenare/AFP/Getty Images hide caption
Iranian Foreign Minister Mohammad Javad Zarif said Tuesday that Iran's missile program is purely defensive. The U.S. announced new sanctions on individuals and companies it says support Iran's ballistic missile program. Vahid Salemi/AP hide caption
House Speaker Paul Ryan meets with reporters on Thursday. He said he would support additional sanctions on Iran following a ballistic missile test over the weekend. J. Scott Applewhite/AP hide caption
Chicago-based aircraft manufacturer Boeing would not divulge details about its deal with Iran Air — not the number of aircraft involved, the specific models or the price tag. Simon Dawson/Bloomberg via Getty Images hide caption
A ranch manager holds pistachios at a farm in Madera, Calif. The lifting of sanctions on Iran has California growers worried that Iranian pistachios will flood the U.S. market. Justin Kase Conder/AP hide caption
The Iranian private airline Mahan Air uses Airbus planes, like the one pictured here at Yemen's Sanaa airport in 2015. Tehran is in talks with Airbus to buy more than 100 additional passenger planes. Hani Mohammed/AP hide caption
An Iranian man walks past a mural displaying an outline of Iran, adorned in the colors of the country's national flag, on June 29 in Tehran. A large majority of Iranians appears to support the nuclear deal. Bherouz Mehri/AFP/Getty Images hide caption
President Obama speaks about the nuclear deal with Iran at American University in Washington, D.C., on Wednesday. Carolyn Kaster/AP hide caption
Iranian workers transfer goods from a cargo container to trucks in May at the Kalantari port in Chabahar, Iran. The removal of sanctions on Iran under a recent deal with world powers is expected to boost the country's economy, but the agreement was carefully constructed to quickly put those sanctions back in place if Iran is suspected of violations. Atta Kenare/AFP/Getty Images hide caption
A man walks past a poster advertising travel to Tehran, Iran, in Los Angeles on July 14. A nuclear deal between Iran and six world powers lifts some sanctions against Iran, but most U.S. sanctions will remain in place. Lucy Nicholson/Reuters/Landov hide caption
President Obama hosts leaders of the Gulf Cooperation Council at Camp David, Md., on May 14. The president gave assurances that the U.S. would support its allies in the region concerned over Iran's growing influence. Andrew Harnik/AP hide caption
Iranian oil workers gather at an oil refinery south of the capital Tehran, Dec. 22, 2014. Iran's oil exports have been crippled by sanctions. Vahid Salemi/AP hide caption
People gather around a car as it is removed by a mobile crane in Tehran, Iran. The car was being driven by Iranian nuclear scientist Mostafa Ahmadi Roshan when it was targeted by a bomb Wednesday. Roshan was killed in the blast. Meghdad Madadi/AP hide caption
Iranian protesters breached the gates of the British embassy in Tehran on Tuesday, tearing down the British flag and ransacking offices. Atta Kenare/AFP/Getty Images hide caption