After the expiration of the deadline that Iran gave to the United States to lift its sanctions on Tehran, and the deterioration in relations between Iran and the International Atomic Energy Agency, and its threats not to give any information before the embargo was lifted, Iran has accepted holding a series of meetings with the UN nuclear watchdog in order to “clarify a number of outstanding issues,” the body’s Director General Rafael Grossi said Thursday.

“We are going to be starting this process… with a technical meeting which will take place in Iran at the beginning of April, which I hope will be followed by other technical or political meetings,” Grossi, the head of the International Atomic Energy Agency (IAEA), told reporters at a press conference.

The new process will be aimed at clarifying queries the IAEA has raised about the possible previous presence of nuclear material at undeclared sites.

Meanwhile, The European nations will not go ahead with a planned resolution criticising Iran at this week’s meeting of the UN nuclear watchdog, diplomatic sources said on Thursday.

France, Britain and Germany had planned to introduce a resolution at a meeting of the International Atomic Energy Agency’s board of governors, with the support of the United States, criticising Iran’s suspension of some IAEA inspections.

However, diplomats said the resolution, which had not yet been formally submitted, will now not be put forward.

The decision to hold off was taken “to give time to diplomacy,” one diplomatic source said, pointing to “initiatives undertaken by (IAEA Director General Rafael) Grossi” and signs of “good faith” on the Iranian side.

The latest moves come at a delicate moment for diplomacy on the Iranian nuclear issue, with fragile efforts underway to revive the ailing 2015 deal between Iran and world powers on its nuclear programme.

The Iranian Ambassador to the IAEA Kazem Gharib Abadi, tweeted on Thursday that “due to extensive diplomatic consultations” at the IAEA, “a glimpse of hope is looming to prevent unnecessary tension.”

“Wisdom prevails,” he added.

The US told IAEA that Iran has been given a chance to address the concerns on uranium particles found at undeclared, old sites and Washington will watch closely.

“Iran has now been given another opportunity by the Director General to offer up the necessary cooperation before this Board next meets,” the US statement to the board said, shortly after diplomats said plans for a resolution criticizing Iran had been scrapped.

“The United States, like all Board members, will calibrate our views on the Board’s next steps according to whether Iran seizes the opportunity now before it to finally and credibly address the IAEA’s concerns,” it added.