News - Middle East: An advisor to the Iranian negotiating team says the US' delaying tactics in ongoing talks between Iran and the world countries to salvage the 2015 nuclear deal boils down to the problems Biden administration faces internally as well as the Israeli pressure from outside.

"I think it's pretty clear that the United States has its own internal problems. And also [there is] a lot of pressure on [US President Joe] Biden by the Israeli regime and its supporters in Washington," Mohammad Marandi said on Wednesday during an interview with France 24.

Iran and the world powers, including the US, struck a nuclear deal in 2015, officially known as the Joint Comprehensive Plan of Action (JCPOA).

However, in a unilateral and illegal move, the US pulled out of the deal in May 2018, under pressure from the Israeli regime and its influential lobby groups in Washington. After withdrawing from the deal, the US reinstated draconian sanctions that the accord had lifted.

Since April last year, the Austrian capital of Vienna has played host to talks in order to examine the prospect of Washington's return to the JCPOA, as well as the removal of illegal and unjust sanctions on Iran.

The European Union, which acts as the coordinator of the talks, recently forwarded a fresh proposal to the Islamic Republic in order to break the impasse that has affected the negotiations due to American procrastination.

Iran submitted its response to the EU draft proposal on August 15, a week after the latest round of talks wrapped up in Vienna.

Four days of talks between representatives of Iran and the five remaining parties to the nuclear deal ended on August 8 with a modified text on the table.

After submitting its response to the EU proposal, Tehran urged Washington to show "realism and flexibility" in order to reach an agreement.

Marandi's remarks came after Josep Borrell, the EU foreign policy chief, hailed Tehran's response to the proposal as "reasonable", placing the onus on the United States to clarify its stance concerning the proposal.