"But this must be balanced and if signatories other than the USA can guarantee Iran's interests, Iran will stay in the deal without the US", he added.
"We are not looking to grant licenses or waivers, because doing so would substantially reduce pressure on Iran and this is a campaign of imposing pressure on Iran.We are prepared to work with countries that are reducing their imports on a case-by-case basis, but as with our other sanctions, we are not looking to grant waivers or licenses", said Brian Hook, Director of Policy Planning at the State Department, on July 2, when asked specifically about concessions for India.
Signatories to the deal, including the European Union, have vowed to keep the 2015 deal alive without the USA by trying to keep Iran's oil and investment flowing, but have acknowledged that sanctions would make it hard to give Tehran guarantees.
An Iranian lawmaker says the Islamic Republic is considering a plan to purchase goods only from countries that buy its oil.
India is an oil-dependent country and will act what is in its national interests, they said.
Iran's president Hassan Rouhani is in Europe to see what the Europeans have to offer in order to salvage Iran's 2015 nuclear deal with the world powers.
On July 6, the foreign ministers of Iran and the five world powers still party to the nuclear deal - Britain, France, Russia, China, and Germany - will meet in the Austrian capital to discuss ways to preserve it in the wake of the USA withdrawal.
"Iran will survive this round of U.S. sanctions as it has survived them before", he said, describing U.S. sanctions as a "crime and aggression".
Rohani, accompanied by Foreign Minister Mohammad Javad Zarif, is holding talks with Austrian leaders in Vienna after a stop in Switzerland. "The United States will never be able to cut Iran's oil revenues".
The UAE, an American-allied federation of seven sheikhdoms on the Arabian Peninsula, hosts some 5,000 USA troops.
Iran had struck the JCPoA (Joint Comprehensive Plan of Action) deal with the United States, the UK, Russia, China, France and Germany after years of negotiations.
"Iran will survive this round of USA sanctions as it has survived before".
"For now, that's the plan", an European Union source said. Washington has since told countries they must halt all imports of Iranian oil from November 4 or face US financial measures, with no exemptions.
The EU's foreign service, the EEAS, was not immediately available for comment on the meeting.
"These three countries account for about half of Iran's oil exports", it said.
Since President Donald Trump's decision to withdraw in May, calling the agreement deeply flawed, European states have been scrambling to ensure Iran gets enough economic benefits to persuade it to maintain the nuclear curbs required in the deal. Saudi Arabia is planning to push up oil production to record levels of about 11 million barrels per day starting in July, Reuters reported Tuesday.