The recent killing of the Iranian Revolutionary Guards Quds Force by a US air strike in Iraq, has stirred divergent reactions from very many nations. Very many are drawing maps on the potential consequences of Trump's actions and many see a possible looming war ahead. The 46th President of the United States however maintains that he did what was necessary to protect the United States amidst the accusations of insensitivity coming from commentary.
This attack adds to the series of attacks by both nations on each other, it's a story of friends turned enemies. Why do friends turn enemies?
'' When they are not really your true friends, when you have to stop giving, due to things beyond your control, they become your enemy after a while''.
Let us go down the memory lane a bit.

The US initially had the trust of Iran whom saw her as a more trustworthy foreign power than Britain and Russia. This view remained, despite invasion of Iran during the second world war by two US allies the United Kingdom and the Soviet Union. The U.S. also staged a Coupé which brought Mohammad Mosaddegh's regime to an end, which as expected, developed a very close alliance between both nations.

Iran created its nuclear program, starting in 1957 with the help of the U.S., who provided her first nuclear reactor and nuclear fuel.
The U.S. helped Iran create its nuclear
program starting in 1957 by providing Iran
its first nuclear reactor and nuclear fuel. Iran's nuclear program was launched with the help of the U.S. and the latter had participated in her nuclear program until the 1979 Iranian Revolution.
The revolution had ousted the pro-American Shah who was 'instated' by the U.S. and replaced him with an anti-American Supreme Leader. This was the beginning of the dramatic reversal in the relationship between these two countries. Many opinions as to the possible cause of this change have been raised, ranging from a perceived unavoidable conflict by the U.S., perceived arrogance from the U.S. and the desire for global dominance amongst others.
These revolutionaries had also wished to execute the ousted Shah for being a 'Puppet' for the Americans and prevented him from getting treatment for his cancer. The Shah was later received by the US after much pressure from pro-Sha political figures, leading to the first Iranian attack on the U.S.
Angered by the help offered by the US, the revolutionary group Muslim Followers of the Imam's line, reportedly took 52 American Diplomats into hostage for 444 days.

On April 7th, 1980, Carter imposed the first United States sanctions against Iran and severed diplomatic relations between Iran and the United States and they have been frozen ever since then.

Efforts by the U.S. to rescue the abducted diplomats failed and the crises only ended with the signing of Algiers Accords in Algeria on January 19th, 1981. The Iran United States Tribunal (Hague, Netherlands) was established for handling claims of American nationals on Iran and vice versa.

Since the signing of Algiers Accords many accusations and attacks has been recorded for both nations.
During the Iran-Iraq war that began in 1980, there were repeated accusations that the U.S. government actively encouraged the then Iraqi leader Saddam Hussein to invade Iran. Although the U.S. government officially denies any such alliance and no conclusive proof of it has been found.

After the invasion of Iran by Iraq, the United States increased sanctions against Iran. In 1984, sanctions were approved to prohibit weapon sales and all U.S. assistance to Iran.

In 1988, the United States launched Operation Praying Mantis against Iran, the largest American naval combat operation since world war II, claiming it was a retaliation for the Iranian mining of areas of the Persian Gulf as part of Iran-Iraq war.
On July 3, 1988, the US Navy guided missile cruiser USS Vincennes shot down Iranian Airbus A300B2, an attack that killed 290 civilians from 6 nations.

In 1995, the United States banned U.S. investment in Iran's energy sector and in the same year, also banned U.S. trade with and investment in Iran. She only agreed to lift the embargo in 2016 when Iran complied with a deal intended to dismantle it's nuclear weapons capabilities.
The Trump administration also withdrew from this deal in 2018 and reimposed the sanction.
The list of the banter between these countries continues down to this present escalation.

When 'friends' disagree to the point of fighting, they hardly ever come together again due to very many reasons. What do you think of Iran and the United States?
What possibilities await them?
Drop your thoughts in the comment section.