Iran has climbed above the 300-kilogram level of enriched uranium set out in the nuclear deal.

Iranian Foreign Minister Mohammad Javad Zarif said the country’s enriched uranium stockpile has passed the 300-kilogram limit as Iran continues to reduce its obligations under the 2015 nuclear deal known as the Joint Comprehensive Plan of Action (JCPOA).

"We have already announced that the European measures have not been enough and as Iran has announced, we will carry out the second phase of reducing commitments," Zarif said on Monday.

"The first phase is underway, which includes both the (enriched) uranium and heavy water stockpiles, and the next phase have been announced and will be implemented," he noted.

The European parties to the JCPOA had pledged three times to cooperate with Iran in oil sales, the transportation, and return of the country's assets, the top diplomat said, adding that they have not fulfilled their obligations yet.

Speaking to reporters after a meeting with his Turkish counterpart, Mevlut Cavusoglu, in the central city of Isfahan, Zarif pointed to Iran’s measures regarding the JCPOA and said in Iranian President Hassan Rouhani’s letter to the leaders of the JCPOA parties and in his letter to EU foreign policy chief Federica Mogherini, Iran has announced two phases of measures.

The first phase started on May 8 and the second phase will begin on July 7, Zarif added.

On May 8, 2018, US President Donald Trump pulled his country out of the JCPOA, a 159-page nuclear agreement between Iran and the Group 5+1 (Russia, China, the US, Britain, France, and Germany) came into force in January 2016.

Following the US withdrawal, Iran and the remaining parties launched talks to save the accord.

ILKHA