Foreign minister Dominic Raab said on Tuesday that Iran's decision to take a new step to reduce commitments to a landmark 2015 nuclear deal posed a threat to Britain's national security.
Iran said on Monday it had launched a new batch of advanced centrifuges to accelerate uranium enrichment, following the withdrawal from the nuclear pact by the United States.
"Iran's latest actions clearly contravene the deal and pose a risk to our national security," Raab said.
"We want to find a way forward through constructive international dialogue but Iran needs to stand by the commitments it made and urgently return to full compliance."
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