Donald Trump brought back the punishing sanctions after unilaterally pulling out of a landmark 2015 deal between Tehran and Western powers to halt Iran's nuclear ambitions.
"Today, America is identified as an unreliable and untrustworthy country in the world which does not adhere to any of its obligations", Rouhani said.
Maliki called on the Iraqi government not to be part of the USA policy to impose economic sanctions on Iran.
It will be followed in November by other measures affecting the oil and gas sector as well as the Central Bank.
Meanwhile, Iranian Foreign Minister Mohammad Javad Zarif said his country will not oppose third-country mediation between the US and Iran.
Anti-government demonstrations have spread across the country in recent months, from Iran's heartland to dozens of cities, including the capital of Tehran, as citizens grow increasingly disillusioned by the weak economy, strict Islamic laws, and chronic drought.
USA officials have said in recent weeks that they aim to reduce Iran's oil exports to zero as a means of pressuring Tehran to halt its nuclear and missile programmes and involvement in regional conflicts in Syria and Iraq.
The US leader took to Twitter on Tuesday to issue a strong warning to anyone doing business with Iran, after he reimposed sanctions on the country. Zarif told the state-owned IRAN daily, however, there are now no ongoing talks between the countries.
The top USA general in the Middle East on Wednesday said the military remains "extraordinarily vigilant" about Iranian movements in the Persian Gulf following last week's Iranian naval exercise in and around the Strait of Hormuz.
His Tuesday morning tweet came as Washington's new sanctions on Tehran took effect overnight.
Speaking to state broadcaster IRINN on Wednesday, Rouhani said: "If the Americans want to keep this simplistic and impossible idea in their minds, they should also know its consequences".
While Iran has maintained its nuclear program is for peaceful purposes, before the June summit with Trump North Korea had repeatedly threatened to attack the US and South Korea.
President Hassan Rouhani made his first public comments on the protests Monday, acknowledging some concerns while downplaying the scale of demonstrations, the Wall Street Journalreported.
Already facing broad economic fallout as their currency implodes, Iranians are wondering how the next phase of the crisis in United States relations will play out - and what, exactly, America's long-term strategy is toward their country.
In North America, that means that mosquito season - extending from the late spring through the fall - is West Nile season. Use insect repellent when outdoors; a repellent with DEET or Icaridin offers the most effective protection.
Ontario Premier Doug Ford rolled out the provincial government's buck-a-beer plan at a brewery early today in Picton, Ont. Starting August 27, the minimum price floor for a bottle or can of beer, below 5.6 per cent alcohol volume, will be $1.00.
Bangladeshi news outlets reported that he later visited the families of one of the students killed by the bus to apologize. Activists have also taken to social media in droves to call on local and worldwide media organisations to cover the story.
But as she was paying she kept thinking, this guy looks familiar. "It was then I realized what an idiot I was", she added. The country music star thanked Reed and introduced himself as Keith - and she told him he looked like Keith Urban.
Fans who buy their tickets online will also get a copy of her new album, Cry Pretty , which is set for release on September 14. The new baby will join older brother Isaiah (3), making the Fisher's a family of four.
Burt Reynolds , Timothy Olyphant, Damian Lewis , Dakota Fanning , Al Pacino , Emile Hirsch and Tim Roth also star in the movie. It's not the only Tate film in production, with Hilary Duff also starring in a film titled The Haunting of Sharon Tate .
Oxfam said more than 20,000 people were in temporary shelters and thousands more were camping out in the open. About 2,700 had left, but several thousand more tourists and hotel employees are waiting to leave, he said.
The case involved Innate Immunotherapeutics, an Australian biotech company. for which Collins served as a board member. He and the other defendants are charged with securities and wire fraud, conspiracy and lying to investigators.
The trade balance between the two countries, which is at the center of the tariffs tussle, continued to be in favor of China. China reported larger than expected exports in July, even as the USA prepared a new list of products for tariffs.
The most attention-grabbing announcement is the arrival of a new award for Outstanding Achievement in Popular Film . It also announced that presentation would be aired at a much earlier date than expected, in February 2020.
Canadian exports to Saudi Arabia were about $1.12 billion in 2017, or 0.2 percent of the total value of Canadian exports. Since then, the Saudi kingdom has pursued a scorched-earth policy towards anything related to Canada .
He added that he hoped all shareholders would remain and that all Tesla employees would "remain shareholders of the company". One of the more notable short sellers in Tesla's stock, Jim Chanos of Kynikos Associates, commented on Musk's tweet to CNBC .
FILE - A clerk counts Chinese yuan and USA dollar banknotes at a branch of Bank of China in Taiyuan, China, Jan. 4, 2016. The ministry also warned that it reserves the right of further countermeasures in the intensifying trade war.
Saraki was also expected to meet with Mahmoud Yakubu, chairman of the Independent National Electoral Commission (INEC). Daura is however in a closed-door meeting with the Acting President, now holding at the presidential villa in Abuja.
MoviePass CEO Mitch Lowe blamed the change on the small number of users who were taking advantage of the "unlimited" promise. The change comes a week after MoviePass said it would increase its monthly $9.95 subscription plan to $14.95.
He and police officers called to the scene gave the baby CPR until an ambulance arrived, NY media reported. The New York City Fire Department reportedly took the child to the hospital where the baby died.
Now the array has revealed a planetary-mass object more than a dozen times bigger than Jupiter with a mysterious auroral glow. The auroras on Earth are caused by our planet's magnetic field interacting with the solar wind.
He said that would allow Tesla to "operate at its best, free from as much distraction and short-term thinking as possible". Midway through the trading session in NY on Wednesday, Tesla shares were down 5% at $374 after surging 11% on Tuesday.
Gates was hired by Manafort to serve as deputy campaign chairman and later had a role on Mr Trump's inaugural committee. Asked if had also claimed unauthorised personal expenses from the inaugural committee, Gates replied "It's possible".
John Kasich , a leading voice in the GOP's shrinking anti-Trump wing, once represented the district in Congress. Once they are tallied, an automatic recount would be triggered if the margin of results is within 0.5 percent.
Tesla now has a market value around $60 billion, which would make its take-private price tag about $80 billion, Galloway said. The company is now valued at just over $60 billion, with Musk holding an nearly 20 percent stake in the company.
A geophysicist and volcanologist, Gerst also worked as a volunteer firefighter while in school, according to his ESA biography . Officials have confirmed that six people, including two firefighters and a woman and her two great-grandchildren, have died.
He has also told jurors that he and Manafort knew they were committing crimes for years as part of the offshore payment structure. Gates and Manafort purposely lied to Manafort's accountants, telling them he had no foreign accounts or interests, Gates said.