Trump’s sanctions on Iran are working: Expert

President Trump’s decision to pull out of the 2015 Iran nuclear deal and reimpose sanctions is having a big impact on the Iranian government, according to an Iranian expert.

Stanford University’s Abbas Milani said the president's move hit Iran hard.

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“I think the sanctions clearly exacerbated the already failing Iranian economy,” he said on FOX Business' WSJ at Large. “The economy was in serious trouble when President Trump pulled it out. And these sanctions have clearly made life much, much more difficult for Iran.”

Milani pointed to how much Iran has lost in its most important export.

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Oil sale is now -- the most recent figure I saw-- it’s less than 300,000 barrels," Milani told FOX Business' Gerry Baker. "They were selling two million barrels. So, the economy is hurting them, and I think the economy is the regime’s most serious problem.”

Milani, who has written several books on Iran and is also director of the Iranian studies program at Stanford University and co-director of the Iran Democracy Project at the school's Hoover Institution, said he believes more financial pressure needs to be put on Tehran for its violent activities.

“I think there should be tougher sanctions against the [Iran’s Revolutionary Guard],” he said. “I think there should be tougher sanctions against anyone who has been responsible on ordering this and continues to exercise it. I think they should be barred from traveling, I think their assets as such be subject to all kinds of laws that exist for taking control of these things, the kind of laws that were used against Russia and against Putin.”

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Milani’s comments come as tensions between the U.S. and Iran ratcheted up in recent weeks and with Tehran facing worldwide criticism after accidentally shooting down a Ukrainian airliner. He feels the more the international community puts the squeeze on the mullahs controlling the country, the better the chance the people will revolt against them.

“That kind of a pressure, I think, and in my view, of the clear indication to the Iranian people that nobody is going to determine their future, they should determine their future, but the world is watching and is on their side and is serving notice to them,” he says. “International pressure works.”

Milani was encouraged that, this week, European countries who were signatories to that 2015 nuclear agreement have now threatened to follow Trump’s lead and reimpose sanctions on Iran if the government doesn’t reverse its present course and go back to adhering to the promises it made when it signed onto the deal.