Iranian parliamentary spokesman Ebrahim Rezaei said on Tuesday that ​the country could enrich uranium up to 90% ‌purity, a level considered weapons-grade, if Iran is attacked again.

“One of Iran’s options in the event of another attack could be ​90 per cent enrichment. We will review it ​in the parliament,” Rezaei, who is spokesperson for the ⁠parliamentary national security and foreign policy commission, posted on ​X.

US President Donald Trump said on Monday that an ongoing ​ceasefire between the US and Iran was on “life support” after dismissing an Iranian proposal, underscoring how fragile diplomatic efforts to end ​the conflict remain.

Last June, Trump said Iran’s nuclear ​facilities were “obliterated” by US and Israeli strikes during a 12-day ‌war, ⁠severely limiting Iran’s capacity to enrich uranium.

The fate of around 400kg of uranium enriched to 60%, a short technical step from roughly 90% weapons-grade material, remains unclear.

US intelligence assessments ​suggest Tehran’s nuclear ​programme will ⁠not be significantly impeded unless that highly enriched uranium (HEU) stockpile is removed or destroyed.

The nuclear ​issue has been a key point of ​contention ⁠in talks between the US and Iran to end the conflict that began in late February.

Tehran wants nuclear topics discussed ⁠at ​a later stage, while Washington ​insists Iran should move its highly enriched uranium stockpile abroad and renounce ​domestic enrichment.