A U.S. assault on a key Iranian nuclear facility won’t be efficient, even when American navy’s large bunker-buster bombs are used, a nationwide safety professional conversant in Iran’s program instructed ABC Information on Thursday.
Whereas the 30,000-pound bombs have been examined, they’ve by no means truly been used and the precise nature of the concrete and steel defending the positioning situated deep inside a mountain — that the bombs would wish to penetrate — is not absolutely identified.
Joe Cirincione, who has spent a long time researching nuclear proliferation for Congress and different world leaders, instructed ABC Information that whereas attacking Iran’s nuclear enrichment program would cripple its nuclear weapons functionality, it could not get rid of it.
Airmen have a look at a GBU-57, or the Large Ordnance Penetrator bomb, at Whiteman Air Base in Missouri, Could 2, 2023.
U.S. Air Power by way of AP, FILE
On the middle of President Donald Trump’s determination on whether or not to assault Iran is the Fordo nuclear enrichment facility in northwest Iran. It is stated to be constructed 300 ft deep inside a mountain — possibly extra — and bolstered with concrete, based on specialists.
The U.S. weapon touted as capable of strike contained in the Fordo facility the GBU-57 A/B Large Ordnance Penetrator bomb, generally known as a “bunker buster.” It is able to penetrating 200 ft deep inside an underground goal after which exploding, specialists say.

A B-2 Spirit returns to Whiteman Air Power Base, Missouri, from a deployment to Diego Garcia, British Indian Ocean Territory, Could 9, 2025.
Senior Airman Devan Halstead/509th Bomb Wing/US Air Power
Cirincione stated that utilizing the untested weapon wouldn’t assure success.
“Fordo will not be a straightforward goal. They made this very tough for america to destroy,” he stated. “Even [the bunker buster] cannot penetrate 300 ft of mountain and bolstered concrete.
“It’s essential to drop a bomb, that may dig a crater, after which one other bomb in that crater after which one other bomb, after which one other,” he stated. “After which you’ll solely injury that a part of the power.”
Cirincione additionally famous that even when there’s some injury carried out, Iran’s authorities has the information, expertise and, most vital, sufficient enriched uranium and centrifuges in different locationsto transfer ahead with relative ease.
“You’ll be able to’t bomb that,” he instructed ABC Information. “You’ll be able to sluggish it down, however they’ll decide up and begin once more quick and so they realize it.”
The Worldwide Atomic Power Company this week handed a decision that acknowledged Iran had breached its non-proliferation agreements and has been illegally stockpiling enriched uranium.
“I have been there, it is half a mile underground,” Rafael Grossi, the IAEA’s director common, stated in regards to the Fordo plant, as reported by The New York Times.
Days after the IAEA acted, Israeli forces attacked Iranian targets after Israeli Prime Minister Benjamin Netanyahu claimed the Iranian authorities might create a nuclear weapon “in a really brief time.”
Iranian officers have dismissed claims by Israel that they’re constructing a nuclear weapon.
White Home spokeswoman Karoline Leavitt instructed reporters Thursday that the president would decide about attacking Iran “in two weeks.”

Israel’s Prime Minister Benjamin Netanyahu in Israel, June 13, 2025, President Donald Trump in Washington, June 18, 2025 and Iran’s Supreme Chief Ayatollah Ali Khamenei in Tehran, June 13, 2025.
AFP by way of Getty Pictures/EPA-EFE/Shutterstock
Cirincione pressured that continued navy strikes wouldn’t be a superb choice for Israel or the U.S. if the purpose is an Iran with out nuclear weapons.
“When you acknowledge there isn’t a navy answer to this downside, the navy options can solely be threats to Iran and the one reply is to get Iran to comply with roll again and finish its capabilities,” he stated.