Emboldened President Hassan Rouhani said in his victory speech on Saturday that the message of the election that saw him winning most of the votes is choosing "peace and friendship" with the world over "violence and extremism".
A huge turnout on Friday - estimated at more than 40 million out of 56 million registered voters - led to the vote being extended by several hours to deal with long queues.
Rouhani won another four-year term Friday in a vote that many saw as a referendum on his push for worldwide outreach that led to the nuclear deal, as well as a vote of confidence that his government will be able to help the country's sputtering economy.
But he has faced stiff competition from hardline cleric Ebrahim Raisi, 56, who positioned himself as a defender of the poor and called for a much tougher line with the West.
Now, to dig in on what this moment could mean for the USA and Iran, we're joined by Vali Nasr. At the same time, President Trump has threatened to renegotiate the deal, the nuclear deal with Iran.
Zuma has therefore extended his congratulations and best wishes to Rouhani and the people of the Islamic Republic of Iran, the diplomacy said in Pretoria.
Rouhani said Iran was the vital force behind the fight against the Islamic State in Iraq and Syria and repeated Iran's official stance that the United States and Saudi Arabia are funding "terrorism" in the Middle East. In fact, Parker says Iran Business Hub has received remarkably more interest from United Kingdom businesses in the first days since Rouhani's win.
He said that Iran's ruling powers represent the tip of the spear of global terrorism.
At the Tehran press conference, Rouhani also defended Iran's ballistic missile program, something heavily criticized by Trump's new administration.
Both countries have made bellicose statements, with Iran's defense minister, Hossein Dehghan, telling the Arabic-speaking Al-Manar channel: "We warn them against doing anything ignorant, but if they do something ignorant, we will leave nowhere untouched apart from Mecca and Medina". The meeting with President Sisi - an avowed fan of the president - was especially warm and Trump said he would absolutely be putting Egypt on his list of countries to visit very soon.
President Rouhani now faces the challenge of attracting more foreign - principally European and Asian - investors into the Iranian market.
While the terms of the deal will require that Trump issue more waivers and certify Iran's compliance, he is also expected to continue targeting Iranian individuals and entities involved in "missile, illicit financing and terrorist activities". In Iran's theocratic political system, elections advance the interests of mullahcracy, not democracy.