The 2015 agreement curbed Iran's nuclear program in return for lifting most worldwide sanctions. The first round of United States sanctions on Iran goes into effect in August, followed by ones targeting Iran's oil exports in November.
He was responding to a July 22 warning from Rouhani that the US should not "play with the lion's tail" and warned that any conflict with Iran would be the "mother of all wars".
Trump said this week he is willing to meet with Iran's leadership, without preconditions, "whenever they want" - a sharp departure from his threats against the regime last week.
According to Pompeo, the restoration of sanctions against Iran is an important pillar in United States policy.
Global sanctions were lifted under the pact between world powers and Tehran in return for curbs on Iran's nuclear programme but US President Donald Trump pulled out of the 2015 deal in May.
Camelia Entekhabifard is an Iranian-American journalist, political commentator and author of Camelia: Save Yourself By Telling the Truth (Seven Stories Press, 2008).
China Plans Tariffs on $60 Billion of Imports to Counter Trump
Taken in totality, the new Chinese proposals will cover $ 60 billion in U.S. imports. "They are really hurting their economy". Trump has ultimately threatened tariffs on over $500 billion in Chinese goods, covering virtually all US imports from China.
Despite the protests, Iranian leaders have reacted skeptically to Trump's offer of talks, insisting that the United States first rejoin the nuclear deal.
And John Bolton, the president's national security adviser, is a well-known Iran hawk who has advocated for regime change.
"I would certainly meet with Iran if they wanted to meet", Trump said.
Over the weekend, Trump once again floated the idea of meeting, tweeting "I will meet, or not meet, it doesn't matter - it is up to them!"
But many US allies believe that language is code for regime change.
If the re-imposed sanctions caused the government in Tehran to collapse, Iran would likely devolve into civil war like what unfolded in Syria or radicals would assume power, the diplomat said.
Air strikes kill at least 26 people near hospital in Yemen’s Hudaida
The Yemeni government and rebel opposition Houthis have both declared their willingness to attend UN-organised peace talks in Geneva next month.
The exercise could shut down of the Strait of Hormuz, a crucial Gulf passage for shipments of numerous commodities.
Iran's economy has rapidly deteriorated in recent months due in part to uncertainty over the atomic accord, fueling protests.
People in Shiraz, Isfahan, Mashhad, Karaj, Ahvaz, and Rasht joined the protests that started on Tuesday mainly in Karaj and Isfahan over high inflation and unemployment.
The agency reported all protests had taken place without official permission and were subsequently broken up by police.
Meanwhile, Leader of the Islamic Revolution Ayatollah Ali Khamenei has underlined that any decision to keep the JCPOA running without the USA should be conditional on "practical guarantees" from the Europeans.
U.S. employers add 157,000 jobs, jobless rate hits 3.9 per cent
The U.S. central bank said "the labor market has continued to strengthen and economic activity has been rising at a strong rate". The economy expanded at a 4.1 per cent annual rate in the April-June quarter, the strongest showing in almost four years.