<P> Following the Iranian Revolution of 1979 and the resulting hostage crisis , the United States imposed an asset freeze and trade embargo against Iran . While those sanctions were later lifted , the United States imposed new sanctions in 1987 after Iran 's actions against shipping in the Persian Gulf and support of international terrorism , in 1987 the United States imposed economic sanctions against Iran . The sanctions were expanded in 1995 to include firms dealing with the Iranian government . In 2006 , the UN Security Council passed Resolution 1696 and imposed sanctions after Iran refused to suspend its uranium enrichment program . U.S. sanctions initially targeted investments in oil , gas , and petrochemicals , exports of refined petroleum products , and business dealings with the Islamic Revolutionary Guard Corps ( IRGC ) . This encompasses banking and insurance transactions ( including with the Central Bank of Iran ) , shipping , web - hosting services for commercial endeavors , and domain name registration services . </P>
<P> Following the Iranian Revolution of 1979 and the resulting hostage crisis , the United States imposed an asset freeze and trade embargo against Iran . While those sanctions were later lifted , the United States imposed new sanctions in 1987 after Iran 's actions against shipping in the Persian Gulf and support of international terrorism , in 1987 the United States imposed economic sanctions against Iran . The sanctions were expanded in 1995 to include firms dealing with the Iranian government . In 2006 , the UN Security Council passed Resolution 1696 and imposed sanctions after Iran refused to suspend its uranium enrichment program . U.S. sanctions initially targeted investments in oil , gas , and petrochemicals , exports of refined petroleum products , and business dealings with the Islamic Revolutionary Guard Corps ( IRGC ) . This encompasses banking and insurance transactions ( including with the Central Bank of Iran ) , shipping , web - hosting services for commercial endeavors , and domain name registration services . </P>
when did the us put sanctions on iran
when did the us put sanctions on iran
1979 1987 1995 2006
1979 1987 1995 2006