The European Union’s foreign affairs chief says Israeli Prime Minister Benjamin Netanyahu’s latest allegations that Tehran once pursued nuclear weapons do not appear to show Iran is currently violating the 2015 international nuclear agreement.

Federica Mogherini said late Monday in a first reaction that “what I have seen from the first reports is that Prime Minister Netanyahu has not put into question Iran’s compliance” of the deal.

She insists it is “first and foremost” the International Atomic Energy Agency that must make the assessment whether Iran is abiding by the deal. She says that’s because “the IAEA is the only impartial, international organization that is in charge of monitoring Iran’s nuclear commitments.”