Iran

1980
April — sever as a result of the. and citizens had been taken hostage, 63 from the U.S. Embassy in Tehran and three CIA operatives, on November 4, 1979. One of the hostages was a chemical engineering student from.

In 1979, revolutionaries overthrew the U.S.-allied 's administration and took American hostages. Under U.S. president Jimmy Carter, Iran's assets were frozen. Although some assets were unfrozen in 1981, to date, in international accounts are calculated to be worth between $100 billion and $120 billion. Until 2015, $1.973 billion of Iran's assets were frozen in the United States. According to the Congressional Research Service, in addition to the money locked up in foreign bank accounts, Iran's frozen assets include real estate and other property. The estimated value of Iran's real estate in the U.S. and their accumulated rent is $50 million. Besides the assets frozen in the U.S., some parts of Iran's assets are frozen around the world by the United Nations.

Completion of negotiations, and all hostages were released by and on January 20, 1981 ending the hostage crisis, but with repercussions.

April 30 — Six armed men storm Iranian embassy on Prince's Gate in South Kensington, London.

May 5 — Siege at Iranian Embassy in London ends as the SAS and police storm the building.

September 22 - Iraq invades Iran, captures more than 15,000 km2 of Iran's territory. Saddam Hussein attempts to control the Shatt al-Arab waterway, but is met with heavy Iranian resistance. These actions begin the.

November 9 — Iraqi President Saddam Hussein declares holy war against Iran. The after the war turns against them. The United States supplies Iraq with "helicopters and satellite intelligence that was used in selecting bombing targets."

Journalist Stephen Kinzer explains that the dramatic change in American–Iranian relations, from allies to enemies, helped embolden the Iraqi leader, Saddam Hussein, and that "deepened and widened anti-American feeling in Iran."

1981
Jan 20—President Ronald Reagan completes his 20‑minute inaugural address after being sworn in as President of the United States.

52 American hostages, from the, were then released to U.S. personnel. They were flown from Iran to Algeria as a symbolic gesture of appreciation for the Algerian government's supposed help in resolving the crisis. Negotiations were called, an Algeria Declaration involving a set of agreements between the United States and Iran to resolve the Iran hostage crisis. The agreement involved.

The releasing of the hostages were conducted on the same day as Ronald Reagan’s inaugural address, which has come to be known as the. The conspiracy came to light by Gary Sick, principal White House aide for Iran and the Persian Gulf on the Carter administration's National Security Council, in his book October Surprise: America's Hostages in Iran and the Election of Ronald Reagan.

Iran–Contra affair
Iranian intransigence was instgated by senior US officials who secretly facilitated the sale of arms to the Khomeini government of the Islamic Republic of Iran. This was the subject of an arms embargo that came to be known as the.

During the Iran–Contra affair, in numerous dual-use technologies of both military and civilian applications. Sales included (1) chemical pesticide applications, for use in chemical warfare (2)  such as anthrax and bubonic plague used in medicine and vaccines, to be weaponized for use in biological weapons.

Saudi Arabian businessman Adnan Khashoggi, a middleman and defense contractor, who during the Iran–Contra affair. Khashoggi was a client of Jeffrey Epstein, a financial consultant in 1985.

Beyond 1980s
. Conspiracy, and

In November 2013, the Obama administration opened negotiations with Iran to prevent it from acquiring nuclear weapons. A deal was announced on July 14, 2015, titled the "" (JCPOA). The deal drew strong criticism from Republican and conservative quarters, and from Israeli prime minister Benjamin Netanyahu for the transfer of $1.7 billion in cash to Iran shortly after the deal was announced. Meanwhile,

In 2015, The claimed that 2 to 1 Americans supported the United States efforts to negotiate with Iran on behalf of their nuclear capabilities. The Washington Post also stated that 59% of Americans favored the lift of sanctions on Iran's economics in return for the power to regulate Iran's nuclear arms. A polling group called YouGov also did a survey before President Trump took office and found that in approximately 44% of Americans thought that the President should honor international agreements signed by past presidents.

In April 2016, US Supreme Court ruled Iran must pay almost $2 billion to victims of 1983 Beirut barracks bombings. In response, Iranian parliament voted a bill that would obligate the government to claim compensation from the United States for its hostile actions against Iran, including and United States support for Iraq during the.

In May 2018, the U.S. announced an intention to withdraw from the Joint Comprehensive Plan of Action (JCPOA or Iran nuclear deal), and subsequently imposed several new non-nuclear sanctions against Iran, some of which were condemned by Iran as a violation of the deal.

In October 2018, Reuters reported that the U.S. Treasury said".

On 8 May 2019, Iran replied that Tehran’s actions were in response to "the European countries' failure" and held on to stockpiles of excess uranium and heavy water used in nuclear reactors. Iran gave a 60-day deadline to remaining signatories of the JCPOA to protect it from US sanctions and to provide additional economic support. Otherwise, at the end of that deadline, Iran would exceed the limits on its stockpile of enriched uranium.

Resources

 * Air Force Medical Service, The Iranian hostages arrive in Wiesbaden