ERBIL, Kurdistan Region of Iraq – The US on Tuesday said it is ready to revive negotiations with Iran for stalled nuclear talks at the UN Security Council, with Tehran rejecting its terms as unfair.

Iran and the US held five rounds of indirect nuclear talks before Israel launched an attack on Iranian military commanders and nuclear scientists, which Washington joined by bombing key nuclear facilities.

Following the “12-day war” and reimposition of crippling sanctions on Iran for not fulfilling its nuclear obligations, dialogue has stalled between Tehran and Western states.

"The United States remains available for formal talks with Iran, but only if Tehran is prepared for direct and meaningful dialogue," Trump's deputy Middle East envoy Morgan Ortagus told the Security Council on Tuesday.

"We have been clear, however, about certain expectations for any arrangement. Foremost, there can be no enrichment inside of Iran, and that remains our principle," Ortagus added.

While the US demands the full termination of Iran’s nuclear program, Tehran claims its uranium enrichment is used for “peaceful purposes,” and refuses to halt its activity.

"We appreciate any fair and meaningful negotiation, but insisting on zero enrichment policy, it is contrary to our rights as a member of the NPT [Treaty on the Non-Proliferation of Nuclear Weapons], and it means that they are not pursuing the fair negotiation," Iran's UN Ambassador Amir Saeid Iravani said in response.

"They want to dictate their predetermined intention on Iran. Iran will not bow down to any pressure and intimidation," Iravani stressed.

Since Israeli and US attacks on Iran’s nuclear facilities in June, Tehran has routinely blocked the UN nuclear watchdog, the International Atomic Energy Agency’s (IAEA), from maintaining oversight of its facilities, citing the termination of the nuclear deal’s commitments.

In September, the UN reimposed crippling sanctions on Tehran for allegedly failing to fulfill its nuclear commitments. In turn, Iran blocked the nuclear watchdog from maintaining oversight of its facilities, citing the termination of the nuclear deal’s commitments.