Worldwide sanctions were lifted under the pact between world powers and Tehran in return for curbs on Iran's nuclear programme.
He took over from hardliner Mahmoud Ahmadinejad, whose eight-year term had been marked by tensions with foreign powers.
Iran's United Nations envoy, Gholamali Khoshru, told Etemad newspaper on July 31 that "talks can start at a lower level" before the two countries presidents can sit down together.
On September 24, 2013, the Iranian president shakes hands with French President Francois Hollande at the United Nations in NY.
Trump's predecessor, Obama, held the most recent high-level talks with Iran when he spoke with Rouhani on the phone in 2013. The conversation is a historic first direct communication between the leaders of the two nations since 1979. Iran watchers consider Rouhani a moderate who spent considerable political capital in negotiating with the United States and the West to cast the Iran deal. He called the agreement unfair and expressed doubt that it would limit the nuclear ambitions of Tehran.
The blocking regulation will reportedly come into force Sunday unless more than half of the members of the European Parliament or the EU Foreign Affairs Council object prior to that date.
On September 16, 2015, Syrian President Bashar al-Assad acknowledges that Tehran is providing military and economic support.More news: Actor Steven Seagal made special US-Russia envoy
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"Iran, and it's economy, is going very bad, and fast!"
He is backed by reformers and young Iranians, but he faces accusations of not keeping his campaign promises on social and economic affairs. Protesters in the Iranian capital swarmed its historic Grand Bazaar on Monday, news agencies reported, and forced shopkeepers to close their stalls in apparent anger over the Islamic Republic's troubled economy, months after similar demonstrations rocked the country.
Worldwide 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.
This comes while some Iranian diplomats have hinted that talks could start up between Tehran and Washington "at a lower level".
On July 22, Rouhani warns the USA not to "play with the lion's tail", saying that conflict with Iran would be the "mother of all wars".
In response, Donald Trump sent an explosive, all-caps tweet telling Mr Rouhani to "never, ever threaten the United States again" and "be cautious!".
Iran's former diplomat in London, Nosratollah Tajik, echoed the same stance in an interview with the Iranian Labor News Agency (ILNA) on August 3. In its reporting on that announcement, Reuters added that the White House had clarified Trump's statement by saying the administration would still pursue assertive policies of economic sanctions and other forms of global pressure with the intention of "seeking changes in the Iranian government's behavior".