TEHERAN - Iran's Supreme Leader Ali Khamenei on Tuesday warned the United States against making "nonsensical" remarks regarding Teheran's uranium enrichment during the ongoing indirect nuclear talks between the two countries.

He made the remarks at a ceremony in Teheran to commemorate the first anniversary of former Iranian President Ebrahim Raisi's death, who died in a helicopter crash on May 19, 2024, according to footage of Khamenei's speech published on his website.

ALSO READ: Iran's supreme leader says Trump lied about using power to ensure peace

Khamenei said, "I should give a warning to the other side. The American side that has entered the indirect talks and is negotiating should refrain from idle remarks."

"For them to say that 'we do not allow Iran to enrich uranium' is a big mistake," he added. "No one (in Iran) is waiting for permission from anyone. Iran has its independent policy and method and pursues its own agenda."

The leader said he would later explain to the nation why the Western countries, including the United States, were insisting so much on stopping Iran's uranium enrichment.

Khamenei, in addition, said he expects no results from the ongoing nuclear talks with Washington.

ALSO READ: Iranian president condemns Trump's anti-Teheran remarks

At the sidelines of the same ceremony in Teheran, Iranian Foreign Minister Seyed Abbas Araghchi said the US positions on Iran's uranium enrichment are "unreasonable and illogical," according to the official news agency IRNA.

Araghchi stressed that Iran considered its peaceful right to uranium enrichment non-negotiable.

"What we are witnessing now are the US officials' unreasonable and illogical positions that have become public over the past few days. Iran immediately responded to these positions," he said.

"We will under no circumstances give up on these rights," he added.

READ MORE: Iran won't dismantle uranium enrichment facilities

Facilitated by Oman, the Iranian and US delegations have so far held four rounds of indirect talks since April on Teheran's nuclear program and the lifting of US sanctions.

A fifth round is expected to be held in the coming days, with its date and venue to be announced later.

However, over the past days, US officials have kept saying that Iran should completely cease its uranium enrichment, a request rejected by Teheran, which considers the issue "non-negotiable."