Iranian government spokesman Ali Rabiei said July 20 that a high-ranking committee has decided that an Iran-US agreement on the revival of the multilateral Iran nuclear deal, or Joint Comprehensive Plan of Action (JCPOA), has to be rejected.

Rabiei said the decision was made despite an "agreement in principle" that has already been reached between Iran and American negotiators, who have been indirectly discussing their return to the JCPOA during six rounds of talks in Vienna. The other JCPOA parties present in the negotiations have been China, Russia, the UK, France and Germany.

The spokesman said the committee within Iran's Supreme National Security Council dismissed the new deal on the grounds of "noncompliance" with a contentious parliamentary bill.

The Iranian parliament, which is controlled by hard-liners opposing the Rouhani government, passed the bill in December. Despite expressing strong criticism against the bill, the Rouhani government ultimately swallowed the bitter pill and had to implement it. The legislation stipulated a jump in Iran's nuclear enrichment by 20% and later 60%, among other measures that also drew serious concern from the Western parties to the JCPOA. The same bill requires the government to maintain those breaches until the United States verifiably removes all sanctions against Tehran.