TEHRAN: Iran’s president said on Sunday the United States had failed to undermine a nuclear deal between Tehran and major powers, and hailed the accord as a “long-lasting victory” for Iran, state television reported.

US President Donald Trump on Friday delivered an ultimatum to European signatories of the deal to fix the “terrible flaws” of the agreement with Iran, or the United States would pull out.

“The American administration has failed to undermine the nuclear deal... Trump, despite his repeated efforts, has failed to undermine the accord... The deal is a long-lasting victory for Iran,” President Hassan Rouhani said in a speech, broadcast live on state TV.

On Friday, Trump agreed to waive sanctions against Iran for the last time to give the United States and European allies a final chance to amend the pact.

Iran says the nuclear deal is not renegotiable and it will stick to the accord as long as the other signatories respect it but will “shred” the deal if Washington pulls out.

Under the deal, Iran agreed to curb its nuclear programme, in exchange for lifting of most sanctions.

French President Emmanuel Macron on Saturday had called for the “necessary respect” of Iran’s nuclear deal with world powers, after Israeli Prime Minister Benjamin Netanyahu urged the French leader to change the landmark accord.

A statement from the Elysee said Macron “remembers the importance of preserving the Iran nuclear deal and the necessary respect by all parties of their engagements regarding the accord.”

Meanwhile, Iran’s judiciary spokesman was quoted as saying on Sunday that authorities have arrested a dual national who was taking pictures during recent unrest.

“As far as I was able to find out, we had a dual national arrested and this person had been taking pictures and filming,” Gholamhossein Mohseni Ejei told a weekly news conference, according to the semi-official news agency Fars.

Mohseni Ejei gave no further details.

Separately, Iran has lifted restrictions imposed during recent protests on the country’s most popular social media app Telegram.

Journalists were able to access the service on Sunday and officials confirmed it has been restored.

“The information concerning the end of filtering on Telegram is correct,” a spokesman for the telecoms ministry told AFP.