"We will seek to provide unprecedented financial pressure on the Iranian regime", said the letter, which was also signed by Treasury Secretary Steven Mnuchin, NBC news reported. "We've told our counterparts that we expect them to enforce the sanctions, but if there are specific situations, we're open to listening".
The officials spoke to reporters travelling with them on condition that their remarks not be reported until Monday.
Netanyahu argued that the 55,000 pages of documents and 183 CDs of the Iranian programme dubbed "Project Amad" gave further justification for US President Donald Trump to withdraw from the Iran nuclear deal with world powers.
The rupee-rial arrangement was used to buy oil from Iran before sanctions were lifted against it three years ago.
"We have just received the answer, and it's negative", he said. "We want people to reduce oil purchases to zero, but in certain cases, if people can't do that overnight, we'll consider exceptions".
The first set of U.S. sanctions on Iran will start from August 6 and second set will begin from November 4.
Last month, OPEC agreed to pump more oil to compensate for the loss of barrels from Iran.
If Trump calls, it's not clear whether anyone will answer, with Iran's top leadership rejecting talks with the U.S. However, the Ayatollah regime said the USA must stop what it calls "hostile" policies toward Iran.
Experts who specialize in sanctions-related laws said the merits of the Iranian lawsuit might be weak, partly because of what they called Iran's own transgressions of the 1955 treaty.
The New York Times reported on July 15 that Mossad agents had six hours and 29 minutes to break into a nuclear facility in the Iranian capital, Tehran, before the guards arrived in the morning.
It added that the U.S. is "not in a position to make exceptions to this policy except in very specific circumstances". "The State Department has the ability to issue waivers around significant reductions in the oil markets".
"I think, the world is complying", he said. They say the new revelations show precisely why the nuclear deal was necessary.
Pompeo has been a hardline voice on Tehran.
Iranian Supreme Leader Ayatollah Ali Khamenei attends a meeting with lawmakers in Tehran.
One of these countries is Syria which Iran is now turning into another client state.
The MEA said both sides "reviewed and positively assessed" the progress in implementation of decisions taken during the state visit of Iranian President to India in February 2018, especially for enhancing connectivity and strengthening cooperation in trade and economic issues.
French carmaker Renault, which does not sell cars in the USA, has said it will remain in Iran despite the sanctions.