Iran recently started enriching uranium beyond a limit established in a 2015 nuclear agreement with world powers, a deal from which Trump withdrew.
Still, Tehran knows it must engage with the United States and/or pressure other countries enough to introduce mechanisms that allow Iran to evade USA sanctions.
The French President had reportedly suggested that Iran should stop increasing its uranium enrichment level in exchange for the United States to temporarily revive oil sanction waivers; a measure that would facilitate limited oil exports by Iran.
"Views differed among the other parties to the deal Russia, China, Germany, France, Britain and the European Union and the meeting failed to draw a unified conclusion as Russia and China said the US had breached the deal by pulling out and imposing sanctions".
Pointing to the USA withdrawal from the JCPOA, he added that the Europeans "must solve that problem".
Diplomats gathered in Vienna on Wednesday for an emergency meeting of the International Atomic Energy Agency to discuss Iran's nuclear program. and what to do now that Iran has violated the deal it signed.
A source at the French presidency said "we are in a very critical phase".
"Donald Trump is a dealmaker", the source added.
The EU has repeatedly expressed its strong support for the Iran deal.
Last month, Trump said he had called off a retaliatory military strike against Iran at the last minute after the Islamic republic shot down a U.S. drone that it said had crossed into its airspace, a claim denied by Washington.
Trump re-upped the pressure on Wednesday, claiming "Iran has always been secretly "enriching" uranium in violation of the accord.
Abolfazl Hassanbeigi, a senior member of the Iranian parliament's National Security and Foreign Policy Commission, has warned that Tehran may finally exit from the 2015 Iran deal if "the Europeans do not act upon their undertakings". "Sanctions will soon be increased, substantially!"
On Saturday, he held an hour-long conversation with Rouhani in which he said he wanted to "explore the conditions for a resumption of dialogue between all parties". Right now, the prospect of engagement with Washington is unappealing, especially as hawkish elements in the Trump White House are still calling for a strike on Iran.