“We are on the right track and some progress has been made, but this does not mean that the talks in Vienna have reached the final stage,” Foreign Ministry spokesman Saeed Khatibzadeh told a weekly news conference in Tehran.

The governments of France, Germany and the UK on 14 April responded to Iran's plans to enrich to 60% with "grave concern",

Iran has insisted that the US drop all the sanctions it unilaterally imposed after withdrawing from the deal in 2018, while US officials have maintained that Iranian nuclear violations of the agreement must be rectified first.

Iran met in Vienna with the remaining signatories of the deal – the EU, UK, France, Russia, China and Germany. While the US was also in Vienna, it did not participate directly in those talks but met separately with the deal signatories in a different part of the city.

Iranian crude production has risen in recent months, hitting 2.14 million b/d in February, a 190,000 b/d increase from a 33-year low of 1.95 million b/d in August.

"Based on this document, China will be a steady importer of Iran's oil, and Iran should remove China's concerns for return of its investment,"

Iran, which sits on the world’s fourth-largest oil reserves, relies heavily on oil revenue, but sanctions have prevented it from pumping at anywhere near capacity since 2018.

The contracts, worth a total of $1.2 billion, were signed on Monday in the presence of Iranian Minister of Petroleum Bijan Zangeneh,

India was an attractive market for the US for innovation, alternative energy, and investment avenues.

Iran's oil exports are already under intense US sanctions pressure, and recent moves by the Trump administration have been seen as an attempt to harden its policy ahead of a Joe Biden White House.

Iran’s oil exports have shrunk from more than 2.5 million bpd since 2018,

Iran sanctions relief under a change in US president represents the biggest supply and price impact for global oil markets

The EU considers the extraterritorial application of unilateral restrictive measures unlawful and contrary to international law.

The latest IAEA annual projections show that nuclear power will continue to play a key role in the world’s low-carbon energy mix, with global nuclear electrical capacity seen nearly doubling by 2050 in our high case scenario. Climate change mitigation remains a key potential driver for maintaining and expanding the use of nuclear power.

U.S. sanctioned Iran-based Abadan Refining; China-based Zhihang Ship Management, New Far International Logistics and Sino Energy Shipping; and UAE-based Chemtrans Petrochemicals Trading.