"Iran has fulfilled all its obligations under the deal, not the United States and the three European countries… If they want Iran to return to its commitments ... America must completely lift sanctions, and not just in words or on paper," Ayatollah Khamenei said in a televised speech to Iran’s Air Force commanders.
"They must be lifted in action, and then we will verify and see if they have been properly lifted, and then return," he added, according to AFP.
Former US president Donald Trump withdrew from it in 2018 and reimpose sanctions on Tehran.
In response to Trump's so-called “maximum pressure” campaign, Iran began to gradually suspend its compliance with most key nuclear commitments to the deal a year later.
The administration of US President Joe Biden has expressed willingness to return to the deal, but insisted that Tehran first resume full compliance.
On Monday, Iranian Foreign Minister Mohammad Javad Zarif said the European Union foreign policy chief Josep Borrell can “choreograph the actions needed to be taken by the United States and Iran” over the nuclear deal.
On January 4, Iran announced it has stepped up its uranium enrichment process to 20% purity, far above the 3.67 percent level permitted by the deal.
The Islamic Republic may restrict by February 21 nuclear inspections if US sanctions are not lifted or other key parties to the deal do not help Tehran bypass them, according to a law passed by Parliament in December.
Iran has repeatedly said it could quickly reverse those violations if US sanctions are removed but has ruled out any talks over its ballistic missile program and its influence in the West Asia.
Ayatollah Khamenei said Iran has "a right to set conditions for the continuation" of the deal as it has upheld its end, unlike the US and the three European members of the deal – Britain, France and Germany – that have "violated all their commitments".
"No one in the Islamic Republic cares for the nonsense claimed by those not entitled to anything," he said.
The Leader insisted that the conditions set by Tehran for the US is Iran's "definite policy".
“This is the definite and irreversible policy of the Islamic Republic, and all of the country’s officials are unanimous on this, and no one will deviate from it.”
Iran "will not turn back from" it, Ayatollah Khamenei said.
The Leader pointed to Washington’s past failures to hurt Iran's Islamic Establishment as one of its numerous miscalculations concerning the country.
He particularly recalled Trump’s national security adviser John Bolton’s failed prediction that Washington would successfully enable a "regime change" in Iran by early 2019.
“One of those very first-class idiots had said two years ago that they would be celebrating the New Year in Tehran in January 2019,” Ayatollah Khamenei, according to Press TV.
The Leader’s address to Iran’s Air Force commanders was held on the anniversary of a historic development that came days before the 1979 victory of Iran’s Islamic Revolution that deposed the former US-backed Pahlavi regime. The event saw Iran’s Air Force officers, breaking away from the monarchical regime and pledging allegiance to the late founder of the Islamic Republic, Ayatollah Rouhollah Khomeini.
“Now, that person has entered the dustbin of history and his boss (Trump) has been kicked out of the White House in a humiliating manner. By God’s grace, though, the Islamic Republic still stands tall,” Ayatollah Khamenei said.
Washington’s excessive trust in the Pahlavi regime’s military, the Leader said, was yet another calculation that was proven wrong when Iran’s Air Force personnel turned their backs on the US-backed regime.
Ayatollah Khamenei described the officers deserting the army and joining the masses of revolutionary people as a “miracle-like” development that hugely contributed to the Islamic Revolution’s victory.
He also pointed to Trump’s chaotic final days in the White House, which culminated in the invasion of the Capitol Hill by his extremist supporters.
The Leader said the incidents were not to be underplayed and judged only in light of the twilight of an American president. Rather, those developments in fact marked “the twilight of America’s reputation, power, and social integrity,” he noted.
Ayatollah Khamenei advised the Iranian officials to always beware of the enemy and its error-riddled calculations and “constantly increase the constituents of national power.”
He hailed the recent back-to-back military exercises featuring Iran’s Army and Islamic Revolution Guards Corps (IRGC) as attempts by “the children of this country to boost national security,” calling the maneuvers “a cause for pride”.
The Leader, meanwhile, denounced certain regional states for relying on extra-regional sources for their own security, noting that those very same foreign powers would desert them when their assistance is required.