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The foreign ministries of Germany, France and Britain on Thursday expressed “grave concern” over that said Iran continues to produce uranium metal, which can be used in the production of a nuclear bomb.

The (IAEA)��in Vienna confirmed earlier this week that has produced uranium metal enriched up to 20 percent��for the first time, and has significantly increased its production capacity of uranium enriched up to 60 percent.��

The production of uranium metal is prohibited by the 2015 known as the Joint Comprehensive Plan of Action, or JCPOA, which promises Iran economic incentives in exchange for limits on its nuclear program, and is meant to prevent Tehran from developing a nuclear bomb.

Germany, France and Britain — the western members of the JCPOA — called the moves by Iran “serious violations” of its commitment under the JCPOA. They said that “both are key steps in the development of a nuclear weapon and Iran has no credible civilian need for either measure.”

Iran insists it is not interested in developing a bomb, and that the uranium metal is for its civilian nuclear program.

“Our concerns are deepened by the fact that Iran has significantly limited IAEA access through withdrawing from JCPOA-agreed monitoring arrangements,” the joint statement added.

unilaterally pulled out of the nuclear deal in 2018, with then-President Donald Trump saying it needed to be renegotiated.

Since then, Tehran has been steadily increasing its violations of the deal to put pressure on the other signatories to provide more incentives to Iran to offset crippling American sanctions re-imposed after the US��pullout.

The western Europeans, as well as have been working to try to preserve the accord.

US President Joe Biden has said he is open to rejoining the pact, but that Iran needs to return to its restrictions, while Iran has insisted that the US��must drop all sanctions.

Months of talks have been held in Vienna with the remaining parties of the JCPOA shuttling between delegations from and the US

The last round of talks ended in June with no date set for their resumption.

Following the latest IAEA report on the increase in uranium metal production, US��State Department spokesman Ned Price said earlier this week that the move was “unconstructive and inconsistent with a return to mutual compliance.”

In Thursday's statement, the three western European powers said that “Iran‘s activities are all the more troubling given the fact talks in Vienna have been for two months now and that Iran has not yet committed to a date for their resumption.”

“While refusing to negotiate, Iran is instead establishing facts on the ground which make a return to the JCPOA more complicated,” the statement said.