A senior Iranian official quickly accused the three European
powers of harming diplomacy and vowed that Tehran would not bow to pressure
over the move by the E3 to launch the so-called "snapback mechanism".
The
three powers feared they would otherwise lose the prerogative in mid-October to
restore sanctions on Tehran that were lifted under a 2015 nuclear accord with
world powers.
French Foreign Minister Jean-Noel Barrot said the decision
did not signal the end of diplomacy. His German counterpart Johann Wadephul
urged Iran to now fully cooperate with the UN nuclear watchdog agency and
commit to direct talks with the United States over the next month.
A senior Iranian official told Reuters the decision was
"illegal and regrettable" but left the door open for engagement.
"The move is an action against diplomacy, not a chance
for it. Diplomacy with Europe will continue," the official said, adding:
"Iran will not concede under pressure."
The UN Security Council is due to meet behind closed doors
on Friday at the request of the E3 to discuss the snapback move against the
Islamic Republic, diplomats said.
Iran and the E3 have held several rounds of talks since
Israel and the US bombed its nuclear installations in mid-June,
aiming to agree to defer the snapback mechanism. But the E3 deemed that talks
in Geneva on Tuesday did not yield sufficient signals of readiness for a new
deal from Iran.
The E3 acted on Thursday over accusations that Iran has
violated the 2015 deal that aimed to prevent it developing a nuclear weapons
capability in return for a lifting of international sanctions. The E3, along
with Russia, China and the United States, were party to that accord.
US President Donald Trump pulled Washington out of that
accord in 2018 during his first term, calling the deal one-sided in Iran's
favour, and it unravelled in ensuing years as Iran abandoned limits set on its
enrichment of uranium.
Trump's second administration held fruitless indirect
negotiations earlier this year with Tehran.
US
Secretary of State Marco Rubio welcomed the E3 move and said Washington
remained available for direct engagement with Iran "in furtherance of a
peaceful, enduring resolution to the Iran nuclear issue".
An Iranian source said Tehran would do so only "if
Washington guarantees there will be no (military) strikes during the
talks".
The E3 said they hoped Iran would engage by the end of
September to allay concerns about its nuclear agenda sufficiently for them to
defer concrete action.
"The E3 are committed to using every diplomatic tool
available to ensure Iran never develops a nuclear weapon," including the
snapback mechanism, they said in a letter sent to the UN Security Council.