Iran has committed another breach of its nuclear deal with major powers by enriching uranium with advanced centrifuges, a report by the U.N. nuclear watchdog policing that deal said on Thursday, further fraying the landmark accord.

Iran said on Friday it had taken a step to further scale back its commitments to a 2015 nuclear deal, Iran's semi-official ISNA news agency reported.

U.S. Secretary of State Mike Pompeo said on Friday that the United States needed Iran to "come to the table" for negotiations, amid rising tensions between Washington and Tehran in the Gulf that have impacted global oil markets.

Iran's main demand in talks aimed at saving its nuclear deal is to be able to sell its oil at the same levels that it did before Washington withdrew from the accord a year ago, an Iranian official said on Thursday.

Iran has no reason left to carry out commitments under its 2015 nuclear deal without reciprocation from the remaining European signatories, Deputy Foreign Minister Abbas Araqchi said on Tuesday, according to the Fars news agency.

Iran will continue scaling back compliance with a nuclear deal unless other signatories to the pact show “positive signals”, the Iranian president said on Saturday as tensions with the United States escalated over tanker attacks in the Gulf region.

Iran's powerful parliament speaker Ali Larijani said Sunday that the time for Europe to show it can save the nuclear deal was coming to an end.

Iranian President Hassan Rouhani said on Saturday he wanted more talks with Russia about what he called the "illegal" U.S. withdrawal from the Iran nuclear deal.

Iran has begun preparations to boost its uranium enrichment capacity, its nuclear chief said on Tuesday, adding to pressure on European powers trying to save a nuclear accord with Tehran in peril after a U.S. withdrawal.

The U.S. decision to scrap the Iran nuclear deal and implement a tough strategy on the country will strengthen Tehran’s hardliners and endanger the region as a whole, France’s foreign minister said on Wednesday.

Iran's Foreign Minister Mohammad Javad Zarif said Sunday that European efforts to save the nuclear deal after the exit of the United States were not sufficient.

After leaving the Iran nuclear deal, Washington wants to move forward by offering to build a "coalition" to counter the multiple "threats" posed by the Tehran regime -- but Europeans intent on saving the 2015 accord may thwart that effort.

President Donald Trump said on Tuesday the United States will withdraw from a 2015 international agreement designed to deny Tehran the ability to build nuclear weapons.

U.S. President Donald Trump said that he will announce on Tuesday whether he will be pulling out of the Iran nuclear deal, which is earlier than the previous scheduled date of announcement on May 12.

UN officials who examined debris from missiles fired at Saudi Arabia from Yemen have not confirmed that they were Iranian-made but are still analyzing the information, according to a confidential report obtained by AFP on Monday.