The United States said Thursday if Iran wanted sanctions relief beyond that of the 2015 Iran nuclear deal it must address US concerns beyond the pact.

"We are not negotiating in public, but if Iran wants sanctions lifting that goes beyond the JCPOA, they will need to address concerns of ours beyond the JCPOA," a State Department spokesperson said, referring to the 2015 deal.

Iran has demanded that its Revolutionary Guard (IRGC) be removed from the US list of terrorist organization.

"Conversely, if they do not want to use these talks to resolve other bilateral issues beyond the JCPOA, then we are confident that we can very quickly reach an understanding on the JCPOA and begin reimplementing the deal," the spokesperson added. "Iran needs to make a decision."

The US spokesperson was responding to a top Iranian official who earlier said Iran will not give up on its plans to avenge the 2020 US assassination of Qods Force Commander Qasem Soleimani, despite "regular offers" from Washington to lift sanctions and provide other concessions in return.

The (Qods) Quds Force is the foreign espionage and paramilitary arm of IRGC that controls its allied militia abroad. The Trump administration put the IRGC on the State Department list of Foreign Terrorist Organizations in 2019.

"Under any return to the JCPOA, the United States would retain and aggressively use our powerful tools to address Iran’s destabilizing activities and its support for terrorism and terrorist proxies, and especially to counter the IRGC," the State Department spokesperson said.