The new US Iran envoy spoke with British, French, and German officials on Thursday as the United States explores how to revive the 2015 nuclear deal former US President Donald Trump abandoned, two sources familiar with the matter said on Friday.

Iran PressAmerica: "It was to take stock of the dossier and to assess what our state of mind is," a European diplomatic source said of US special envoy Robert Malley’s conversation with the British, French, and German foreign ministry political directors.

A second source confirmed that the discussion took place but offered no details. The State Department did not immediately respond to requests for comment, Reuters reported.

The nuclear deal, formally called the Joint Comprehensive Plan of Action (JCPOA), was struck by Iran and six major powers and committed Iran to restrict its nuclear program in return for sanctions relief from the United States and others. Malley was a member of the US team that negotiated the deal during the Obama administration.

Trump abandoned the deal in 2018 and revived US sanctions.

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Iran opposes revision, renegotiation, or extension of JCPOA

The Biden administration has insisted Iran resume complying before it would. Tehran argues that Washington abandoned the agreement and should return before Iran does.

US Secretary of State Antony Blinken has said the time it would take Iran to make enough fissile material for a single nuclear weapon has fallen to three or four months from over a year under the deal.

"From our perspective, a critical early priority has to be to deal with what is an escalating nuclear crisis as they (Iran) move closer and closer to having enough fissile material for a weapon," White House national security adviser Jake Sullivan said at an event in Washington on Friday.