On Tuesday, Iranian diplomat Ali Akbar Salehi reiterated that Iran "will remain within the framework of the 2015 nuclear agreement", as the country prepares to inform the United Nations' nuclear agency that is beginning to increase capacity to produce uranium.
He specified that this was just the start of the production process and "does not mean that we will start assembling the centrifuges". Under the agreement, the country is allowed to build centrifuge parts but can not put them into operation for a decade.
It will adhere to that limit, Iran's supreme leader, Ayatollah Ali Khamenei, said in a speech on Monday.
In the face of the United States retreat, all three European leaders strongly defend the agreement as the best way to head off a regional arms race and have vowed with Russian Federation and China, the two other signatory countries, to keep it alive.
Obama, Merkel, Macron, Netanyahu and other world leaders speak out after U.S. President President Donald Trump's decision to pull out of the Iran deal.
According to the deal, Tehran has promised to curb its nuclear advancements in exchange for lifted economic sanctions to prevent Iran from upgrading its nuclear arsenal.
The Iran deal paved the way for the partial lifting of worldwide sanctions against the country, in exchange for Tehran curbing its nuclear programme for several years.
Under the 2015 agreement, Iran is permitted to enrich uranium to 3.67 per cent.
On May 8, Trump announced Washington's pullout from the nuclear deal, vowing to reinstate nuclear sanctions on Iran and impose "the highest level" of economic bans on the Islamic Republic.
Israeli Prime Minister Benjamin Netanyahu has embarked on a three-day trip to Europe, where he is rallying leaders against Iran's alleged threat.
Last month, in its first report since the USA withdrawal, the IAEA said Iran continues to stay below the maximum level of uranium the deal allows it to enrich.
He also called Israel a "malignant cancerous tumour" that should be removed.
"The aim to prevent Iran from developing any kind of nuclear capacity was always the foundation of worldwide policy on Iran", Israel's ambassador to Germany, Jeremy Issacharoff, told AFP ahead of the visit.
The vote brought an end to a 12-year investigation into the "past and present issues" regarding Iran's nuclear activities, which the United Nations nuclear watchdog had been probing under pressure from the Israeli regime, the USA and their allies.
He will be hosted by President Emmuanuel Macron at the Elysee Palace on Tuesday, after traveling from Berlin.
Netanyahu will hold talks with Macron in Paris following his visit to Berlin, focusing on the worldwide nuclear deal with Iran as well as how to push Iranian forces out of Syria.