Iran warns it could enrich uranium to 90% if US-Israel renews offensive

Iran warned on Tuesday that one of its responses could be 90% of uranium enrichment in case of a renewed offensive by the US and Israel on its territory. "We will review it in the parliament," said Ebrahim Rezaei, spokesman for the Iranian parliament's Foreign Policy and National Security Committee, in a post on X.

Conflict context

Rezaei's remarks came as regional tensions have escalated since the US and Israel launched strikes against Iran on Feb. 28, triggering retaliation from Tehran against Israel, as well as US allies in the Gulf, along with the closure of the Strait of Hormuz. A ceasefire took effect on April 8 through Pakistani mediation, but talks in Islamabad failed to produce a lasting agreement. The truce was later extended by President Trump without a set deadline.

Proposal rejected

On Sunday, Iran sent Pakistan its response to a US proposal for ending the war, but Trump dismissed it as "totally unacceptable." The US and Iran are reportedly working toward a one-page, 14-point memorandum of understanding that would set parameters for a month of talks, though key issues remain unresolved.

Nuclear implications

Ninety percent enrichment is considered weapons-grade uranium, a significant escalation from Iran's current enrichment levels. The warning underscores Tehran's willingness to advance its nuclear program if diplomatic efforts fail.