Uranium enrichment

Iran announced it has resumed uranium enrichment following a coordinated series of air attacks on its nuclear facilities earlier this year, but its supreme leader said the country would limit enrichment to 60% and would not pursue the roughly 90%+ enrichment typically associated with nuclear‑weapon manufacture.

Attack set the stage

Iran’s announcement follows a set of strikes in June that targeted key nuclear sites — including Fordow, Natanz and Isfahan — in what local and international reporting described as coordinated Israeli and U.S. operations that significantly damaged parts of Iran’s nuclear infrastructure. The strikes and their aftermath have sharply raised tensions and complicated diplomacy over Tehran’s nuclear programme.

What Iran says it will do

In a televised address, Ayatollah Seyyed Ali Khamenei reiterated Iran’s long‑standing public position that it does not seek nuclear weapons, while asserting Tehran’s right to enrich uranium for civilian and other stated purposes. He said Iran would restrict enrichment to 60% — a level that is above that used in commercial power reactors but below the ~90% concentration normally described as weapons‑grade.

Why enrichment levels matter

• Natural uranium is overwhelmingly U‑238; the fissile isotope U‑235 is present at under 1% naturally. Enrichment increases the proportion of U‑235.
• Civilian power reactors typically use uranium enriched to 3–5% U‑235.
• Uranium enriched above 20% is classed as Highly Enriched Uranium (HEU) and is tightly monitored. Enrichment to ~90% and above is conventionally considered weapons‑grade and is used in nuclear weapons.

Because 60% sits well above reactor fuel levels and inside the HEU category, it shortens the technical time and steps required to reach weapons‑grade material — which is why even non‑weapons enrichment to that level draws strong international concern and increased scrutiny from monitoring bodies and foreign governments.

(Source: IE)