Rouhani, speaking Wednesday, derided the tough talk about his country delivered a day earlier by President Donald Trump and Israeli Prime Minister Benjamin Netanyahu at the launch of this year's General Assembly in NY.
But when asked whether the USA would remain in the deal, Trump replied only that, "I'll let you know, I'll let you know for sure".
French President Emmanuel Macron acknowledged Wednesday the Iran nuclear deal is not enough to contain the Islamic Republic's nuke and missile ambitions, however, he maintained scrapping the deal altogether would be a mistake. "I'll let you know what the decision is".
Rouhani praised the deal, and blasted Trump for considering its dismantling.
"The world will have lost a great opportunity, but such unfortunate behaviour will never impede Iran's course of progress and advancement", Rouhani said.
If Trump won't certify Iran is complying, Congress will have 60 days to decide if sanctions related to Iran's nuclear program should be put back in place, an action that would effectively scrap the US side of the deal. In 2015, members of the United Nations unanimously approved the nuclear deal with Iran.
"We will not put up with threats and intimidation, we believe in negotiations and moderation", he continued, referring to Trump's speech.
The president added that if the USA pulls out of the nuclear deal, officially known as the Joint Comprehensive Plan of Action, Iran's commitments "would no longer exist" and it would be free to pursue a new path.
The U.S. would face significant criticism, both within the country and from the other nations that negotiated the initial deal, in any attempt to pull out, Rouhani told reporters at a news conference here Wednesday. "We have two feet of other issues that we must deal with and it has to do with Iran's destabilizing activities".
For his part, Rouhani urged all parties to the JCPOA to live up to their commitments under the nuclear agreement, adding that all should make efforts to contribute to the sustainability of the deal.