Iran argues US sanctions violate accord -- now canceled -- that Washington and Shah's Tehran signed in 1955

The United States and Iran are set to face off at the International Court of Justice (ICJ), also known as the World Court, on Monday, over the US pullout from the 2015 nuclear deal.

At the heard of the matter are the sanctions that the US reimposed on Tehran after withdrawing from the accord in 2018; Iran argues the move came as a violation of the 1955 "Treaty of Amity" between the two countries.

In response, the US formally ended the 1955 treaty, signed long before the 1979 Islamic Revolution in Iran, which saw the ties between the two countries deteriorate from friendship to hostility.

The coming weeks will see the two countries clash over whether the court, which was established in the wake of World War II to resolve disputes between UN members, has jurisdiction in the matter after Tehran turned to it in 2018.

In October 2018, the ICJ ruled that some of the sanctions breached the accord and ordered restrictions on humanitarian goods eased as it works its way through the case.

The US, which has accused Iran of using the ICJ for "propaganda" purposes, will address the court on Monday; Tehran will hold the floor Wednesday.

A decision on that issue could take several months, while a final judgment will take years.

i24NEWS - AFP