European powers urged Iran to reverse its latest decision to breach the levels of uranium enrichment under the 2015 nuclear accord but stopped short of threatening sanctions.

The U.K. and the European Union said they were concerned about Iran's move to abandon uranium enrichment restrictions. Both said they're in contact with other parties to the accord regarding next steps.

Iran's Sunday announcement kept the pressure on Europe to help ease the impact of crippling U.S. sanctions imposed after President Donald Trump pulled out of the agreement a year ago. But while officials said more steps to scale back Iran's commitment will be taken every 60 days, they left the door open for negotiations to salvage the deal.