Donald Trump, if elected as president in the fall, would not cancel the Iranian nuclear deal, one of Trump’s top foreign policy advisors said on Monday.

“No, he’s not going to get rid of an agreement that has the institutional signature of the United States,” Walid Phares told The Daily Caller in an interview published late Monday. “He is a man of institutions.:

Instead, Phares suggested, Trump is “going to renegotiate it after talking through it with his advisers” and “revise it after negotiating one on one with Iran or with a series of allies.”

Phares insisted that the presumptive Republican presidential nominee “is not going to implement it as is.”

“One of the clear possibilities is he will send it back to Congress,” he added.

Trump himself has been on both sides of the issue since the international accord was signed last July.

“My number one priority is to dismantle the disastrous deal with Iran,” Trump assured the Jewish community during his address at AIPAC’s policy conference in March.

However, in August 2015, Trump said he would strictly enforce the nuclear agreement with Iran and work to improve it. “We have a horrible contract, but we do have a contract,” Trump said. “I have all my life — I love to buy bad contracts where … and I make those contracts good. This is a perfect example of taking over a bad contract. I will find something in that contract that will be very, very well-scrutinized by us, and I think they will not be able to do it, whatever it may be.”

At one point, Trump also suggested that the U.S. should lift economic restrictions to fool Iran into purchasing faulty missiles. “When we hand them 150 billion dollars, we should take the prohibition off for a little while,” Trump said in April. “We will sell them missiles that don’t work correctly. Right? Let them sue us. ‘Oh, I’m sorry they don’t work. Gee, that’s too bad.’”

Trump’s chief rival in the Republican primary, Senator Ted Cruz told voters a day before Trump became the ultimate presumptive nominee, “If you agree with the Iranian nuclear deal; if you think it’s a good idea to send $150 billion to Ayatollah Khamenei, a radical Islamist terrorist who chants ‘Death to America,’ then you should vote for Donald and Hillary.”