The UK, France and Germany have told the UN they are ready to reimpose sanctions on Iran over its nuclear programme if it fails to resume talks by the end of August.The three countries, known as the E3, said they were prepared to trigger a “snapback” mechanism – meaning previous sanctions would be reinstated – unless Iran resumes negotiations.The E3 said they had offered to extend a deadline for negotiations to the end of August, which they said Iran has not replied to. Iranian lawmaker Manouchehr Mottaki said Iran’s parliament was ready to withdraw from a nuclear deal which restricted its nuclear programme if new sanctions were put in place, the Iranian Defa Press news agency reported.The E3’s letter comes after initial talks between their delegations and Iranian diplomats took place in Istanbul, Turkey last month.In the letter to the UN and its chief António Guterres, three foreign ministers – Jean-Noël Barrot from France, David Lammy from the UK and Johann Wadephul from Germany – said they would enforce severe sanctions on Iran unless it agrees to limit its nuclear programme.The E3 said their offer of an extension to the negotiations “remained unanswered by Iran”.”We have made it clear that if Iran is not willing to reach a diplomatic solution before the end of August 2025, or does not seize the opportunity of an extension, the E3 are prepared to trigger the snapback mechanism,” the letter said.They added they were committed to using “all diplomatic tools” to ensure Iran does not develop a nuclear weapon – something Iran has denied intending to do.Last month, Iran said it was prepared for further talks but only once sanctions already in place were lifted and its right to a civilian nuclear programme was agreed.Sanctions on Iran’s nuclear programm …