According to the Trump, the Iranian regime has been indulging in the terrorist activity and exporting violence which is creating wreck in the whole Middle East.
It could also lead to the reimposition of U.S. sanctions on Iran, which would scrap the deal that the United States and five other nations reached in 2015 to limit the Islamic theocracy's nuclear program.
Asked if Trump's comments should be taken seriously, she replied: "I think you can take the president protecting the American people seriously, he's been very clear it's the number one priority and if he feels action is necessary, he'll take it".
Democrats argued that Trump should certify the agreement, warning that the administration's ability to press Iran on other activities it objects to would be compromised - rather than enhanced - if the U.S. threw the future of the agreement into question.
Trump has to announce every 90 days whether Iran is in compliance. "Maybe it's the calm before the storm", Trump said as he motioned to the military leaders around the room, who were also joined by their spouses.
White House spokeswoman Sarah Sanders told reporters in Washington on October 5 that Trump had made "a decision" on the matter, adding that his primary focus "has been a comprehensive strategy on how to deal with Iran".
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Trump posed for a photo with first lady Melania Trump alongside uniformed military leaders and their spouses on October 5 at the White House state dining room, the Daily Mail reported.
Mr Trump recently called it "one of the worst deals I've ever seen".
"If we can confirm that Iran is living by the agreement, if we can determine that this is in our best interests, then clearly, we should stay with it", Mattis testified before the Senate Armed Services Committee.
"You'll find out", Trump shot back.
The White House is outright refusing to explain the President's statement.
"What's storm, Mr. president?" reporters asked.