If President Trump decides not to order a strike on Iran’s main underground enrichment site at Fordow, Israel has a number of options to destroy Iran’s nuclear enrichment facility buried deep under a mountain south of Tehran.

One option includes sending elite Israeli Air Force commandos from Unit 5101, known as Shaldag, which, in Hebrew, means kingfisher, a bird known to be patient and dive deep under water to find its prey.

In September, members of this elite unit surprised the world by entering an underground missile factory used by Iran in Syria.

“There was a site that similarly looked like Fordow,” former Israeli Military Intelligence Chief Amos Yadlin told Fox News in an exclusive interview.  “Even though smaller, the Syrian facility produced advanced ballistic missiles, precise ballistic missiles using Iranian technology, as well as Iranian money.”

AMERICA’S IRAN DILEMMA: HOW TO STRIKE FORDOW WITHOUT LOSING SIGHT OF CHINA THREAT

Israel attacked the site from the air a few times but was not able to destroy the site.

Unit 5101 (Shaldag) used the cover of darkness and diversionary airstrikes to enter the secret site, plant explosives and destroy the complex. Like Iran’s Fordow mountain complex south of Tehran, it was 300 feet underground.

HOW BUNKER BUSTER BOMBS WORK AND HOW THEY COULD DESTROY IRAN’S FORDOW NUCLEAR SITE

“The Air Force took care of all the guards around the perimeter, and Shaldag got in, and the place is gone, destroyed,” Yadlin said with a slight smile.

It’s not the first time Israel has had to plan to take out a secret nuclear complex against the odds and alone. In 1981, Israel flew a daring mission to bomb Iraq’s nuclear reactor at Osirak.

Yadlin was one of eight young Israeli F-16 pilots who carried out the secret attack.

In 1981, Israel flew a daring mission to bomb Iraq’s nuclear reactor at Osirak. Yadlin was one of eight young Israeli F-16 pilots who carried out the secret attack. (Amos Yadlin)

“We didn’t have air refueling at that time. We didn’t have GPS. It was dumb bombs, smart pilot, but a very difficult operational mission when Iraq was in a war (with Iran). So, the state of alert was very, very high,” Yadlin recalled. He and the other pilots believed it might be a suicide mission, and they might not have enough fuel to return home.

More recently, retired Maj. Gen. Yadlin served as the head of Israel’s Military Intelligence in 2007, when Israel blew up a suspected Syrian nuclear reactor that the world did not know about. The White House at the time did not want to assist in the strike. Yadlin has seen history change after Israel has acted alone carrying out daring missions like the exploding pagers that killed most of the top commanders of Iran’s proxy in Lebanon, Hezbollah.

WHY US MUST DESTROY IRAN’S FORDOW NUCLEAR FACILITY NOW

In 2008, when it was determined that Israeli F-16s could not reach Iran’s nuclear sites, Yadlin ordered Mossad to come up with another way to take out Iran’s uranium enrichment at Natanz. Two years later, Israeli and American cyber warriors introduced Stuxnet, a malicious computer worm that caused thousands of Natanz centrifuges to spin out of control, setting back Iran’s nuclear enrichment.

More recently, retired Maj. Gen. Yadlin served as the head of Israel’s Military Intelligence in 2007, when Israel blew up a suspected Syrian nuclear reactor that the world did not know about.  (Amos Yadlin)

The decision to strike Fordow, the crown jewel and heart of Iran’s nuclear program, is different, and Israel prefers the U.S. to use its B-2 stealth bombers and 30,000-pound bunker-buster bombs.

“Anybody who wants the war to be over soon, to be finished quickly, have to find a way to deal with Fordow,” Yadlin said. “Those who think that attacking Fordow will escalate the war, in my judgment, it can de-escalate and terminate the war.”

And it could serve as a deterrent to China and Russia, who will see the power and capability of the U.S. military’s unique capability.

Another option would be to cut power to Fordow. Without power, the centrifuges enriching the uranium could become permanently disabled.

When asked if Israel could take out Fordow without American B-2 bombers, Israeli Prime Minister Benjamin Netanyahu told Fox’s Bret Baier in an exclusive interview last Sunday, “We have quite a few startups too and quite a few rabbits up our sleeve. And I don’t think that I should get into that.”

How did MAGA become Trump’s biggest opponent of a US strike on Iran? The Republican base is split over Trump’s rhetoric about getting involved in another foreign war. Conservative stalwarts like Tucker Carlson and Steve Bannon are pushing back. Could a US strike on Iran be a blow against Trump at home?