[Aktungbby]

Not an entirely clean bill of health here

Iran agreed to restrictions on its nuclear program and intensive inspections in an agreement signed with world powers in July 2015. Under the deal, many of the most punishing sanctions are poised to be lifted when the IAEA verifies that Iran has taken steps such as reducing its stockpiles of fissile materials and centrifuges. Still, some sanctions are unrelated to nuclear proliferation and will remain in place. U.S. sanctions on Iran, however, long predate these nuclear nonproliferation concerns. The United States first levied economic and political sanctions against Iran during the 1979–81 hostage crisis, shortly after Iran's Islamic Revolution. On November 14, 1979, President Jimmy Carter froze all Iranian assets "which are or become subject to the jurisdiction of the United States." The United States imposed additional sanctions when, in January 1984, the Lebanon-based militant group Hezbollah, an Iranian client, was implicated in the bombing of the U.S. Marine base in Beirut. That year, the United States designated Iran a state sponsor of terrorism. The designation, which remains in place, triggers a host of sanctions, including restrictions on U.S. foreign assistance, a ban on arms transfers, and export controls for dual-use items. Sanctions related to sponsorship of terrorism and human rights abuses were not affected by the nuclear deal.

http://www.cfr.org/iran/international-sanctions-iran/p20258