Iran's Foreign Minister Abbas Araghchi speaks at a press conference after attending the BRICS Foreign Ministers' Meeting at the Embassy of the Islamic Republic of Iran in New Delhi, India, Friday. Araghchi signaled a willingness to negotiate with the United States. Photo by Rajat Gupta/EPA

May 15 (UPI) -- President Donald Trump told reporters Friday that the first sentence of Iran's peace proposal was "unacceptable" and accused the country of backtracking on its nuclear policy, but Iran signaled it's still ready to negotiate.

Trump said the first sentence was an "unacceptable sentence, because they have fully agreed no nuclear, and if they have any nuclear of any form, I don't read the rest," CNN reported he said. He added that he is unsatisfied with the "level of guarantee from them."

Trump said Iran had agreed to give up its enriched uranium, which he calls "nuclear dust." But "then they took it back," he said.

But Iranian Foreign Minister Abbas Araghchi said Friday that discussion about uranium enrichment "is currently not on the agenda of discussions or negotiations," but the country is willing to talk about it later in negotiations, according to Iran's news agency Tasnim.