Yukiya Amano, the director general of the International Atomic Energy Agency, has said that implementation of the Joint Comprehensive Plan of Action marks the beginning of a new phase in relations between Iran and the IAEA.

Iranian Foreign Minister Mohammad Javad Zarif and EU Foreign Policy chief Federica Mogherini issued a joint statement on Saturday announcing the implementation of the JCPOA, commonly called the nuclear deal. The deal went into effect after Amano confirmed that Iran had complied with the terms of the nuclear agreement.

“The way is now clear for the Agency to begin verifying and monitoring Iran’s nuclear-related commitments under the JCPOA, as requested by the Security Council and authorized by the Board,” the IAEA’s website quoted Amano as saying during a Board of Governors’ meeting on Tuesday.

As a result of the JCPOA, Iran will provisionally apply the additional protocol to its safeguards agreement with the IAEA, as well as extra nuclear-related commitments, known as transparency measures.

Under the additional protocol, already in force in 121 of 174 states with comprehensive safeguards agreements, states grant the IAEA expanded rights of access to information and sites. The additional protocol helps the IAEA to provide greater assurance about the peaceful use of all nuclear material in those states.

“Iran had previously informed me that it would provisionally apply the Additional Protocol to its Safeguards Agreement with the Agency, starting on Implementation Day, pending its entry into force,” Amano told the board.