The State Department has said the US would accept an invitation from the European Union to attend a meeting of the participants in the original agreement.
International Court of Justice President Abdulqawi Ahmed Yusuf said the tribunal "finds consequently that it has jurisdiction ... to entertain the application filed by the Islamic Republic of Iran."
The US has long employed the power of its currency to dictate the foreign policies of other countries.
FBI agent Robert Levinson disappeared in Iran under mysterious circumstances more than a decade ago.
The UN envoys for Britain, France and Germany said that they remain committed to retain the nuclear agreement with Iran.
US Justice Department accused Iran of "forcibly" boarding an unrelated ship after the four tankers were seized "in an apparent attempt to recover the seized petroleum."
Three members of the bloc led by Saudi Arabia continue to enforce an economic and political blockade of Doha.
Iran's supreme leader has responded by ruling out negotiations with the US over Tehran's ballistic missile and nuclear programmes and urging Iranians to resist pressure.
The reported deal between the two countries has been overstated, and its motives misunderstood.
The Mahan Air plane was heading from Tehran to Beirut over Syrian airspace when US fighter jet passed by for what Washington called a routine inspection. The airliner landed safely in Beirut.
A vote on the war powers resolution could take place as early as Thursday, amid concerns that Trump could embark on open military conflict with Tehran without consulting Congress.
The Syrian pound has hit a new low against the US dollar as its main backer Iran navigates renewed social unrest and regional tensions.
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