Ayatollah Ali Khamenei, Iran’s ultimate authority, accused Britain, Germany and France of failing to uphold obligations under the deal to restore Iranian access to global trade
Iran and the United States sent mixed signals on Tuesday about resolving their disputes as Iran's supreme leader threatened to further breach the 2015 nuclear deal while the US president cited "a lot of progress."
Tensions have risen since US President Donald Trump last year abandoned the major powers' nuclear deal with Iran under which Tehran agreed to curtail its nuclear program in return for the lifting of global sanctions crippling its economy.
Washington has since reimposed draconian sanctions to throttle Iran's oil trade in a "maximum pressure" policy to force Tehran to agree stricter limits on its nuclear capacity, curb its ballistic missile program and end support for proxy forces in a regional power struggle with US-backed Gulf Arabs.
Fears of direct US-Iranian conflict have risen since May with several attacks on oil tankers in the Gulf, Iran's downing of a US surveillance drone, and a plan for US air strikes on Iran last month that Trump called off at the last minute.
Iran's supreme leader on Tuesday said Tehran would keep removing restraints on its nuclear activity in the deal - struck with Britain, China, France, Germany Russia and the United States - and retaliate for the seizure of an Iranian oil tanker.
Ayatollah Ali Khamenei, Iran’s ultimate authority, accused Britain, Germany and France of failing to uphold obligations under the deal to restore Iranian access to global trade, especially for Tehran's oil exports blocked by US sanctions.
"According to our foreign minister, Europe made 11 commitments, none of which they abided by. We abided by our commitments and even beyond them. Now that we've begun to reduce our commitments, they oppose it. How insolent! You didn't abide by your commitments!" Khamenei said, according to his website.
"We have started to reduce our commitments and this trend shall continue," Khamenei said in remarks carried by state television.
United Nations nuclear inspectors last week confirmed Iran is now enriching uranium to 4.5% fissile purity, above the 3.67% limit set by its deal, the second breach in as many weeks after Tehran exceeded limits on its stock of low-enriched uranium.
The level at which Iran is now refining uranium is still well below the 20% purity of enrichment Iran reached before the deal, and the 90% needed to yield bomb-grade nuclear fuel. Low-enriched uranium provides fuel for civilian power plants.
Khamenei has previously upbraided European powers for not standing up to Trump and circumventing his sanctions noose.
But it was the first time Khamenei explicitly pledged to press ahead with breaches of the nuclear deal, spurning European appeals to Iran to restore limits on enrichment aimed at obviating any dash to development of atomic bombs.
"So far, efforts to win gestures from Iran to de-escalate the crisis are not succeeding (as) Tehran is demanding the lifting of sanctions on its oil and banking sectors first," a European diplomatic source told Reuters.
Iran denies any intent to acquire nuclear weapons, and has said all its breaches could be reversed if Washington returned to the deal and its economic dividends were realised. Tehran has accused Washington of waging "economic war."
"Western governments' major vice is their arrogance," Khamenei said. "If the country opposing them is a weak one, their arrogance works. But if it's a country that knows and stands up against them, they will be defeated."
Separately, Iran denied it was willing to negotiate over its ballistic missile program, contradicting US Secretary of State Mike Pompeo and appearing to undercut Trump's statement that Washington had made progress on its disputes with Tehran.
The chief US diplomat said Iran had signalled it was ready to negotiate about its ballistic missiles during a White House Cabinet meeting at which Trump said: "We'll see what happens. But a lot of progress has been made."
Pompeo appeared to be reacting to a comment by Iran's foreign minister that Tehran would discuss its missile program after Washington stopped arming allies the United Arab Emirates and Saudi Arabia, something the United States is unlikely to do.
His assessment drew a quick denial from the spokesman for Iran's mission to the U.N., who posted on Twitter: "Iran's missiles are absolutely and under no condition negotiable with anyone or any country, period."
Speaking during the US Cabinet meeting, Trump struck a conciliatory note, saying Washington wanted to help Tehran.
"We'll be good to them, we'll work with them. We'll help them in any way we can, but they can't have a nuclear weapon. We're not looking, by the way, for regime change," Trump said. "They also can't be testing ballistic missiles."