Iran walked away in June from indirect talks with the United States in Vienna on both sides returning to compliance with the deal.

The EU is not thinking about a “Plan B” if diplomacy with Iran fails, EU Foreign Policy Chief Josep Borrell said on Friday in Washington, as opposed to a US statement that “every option” is on the table.

"It’s time to go back to the negotiating table. And I don’t want to think about Plan Bs because no ... Plan B that I could imagine would be a good one,” Borrell said.

Iran walked away in June from indirect talks with the United States in Vienna on both sides returning to compliance with the deal, under which Iran curbed its nuclear program in return for economic sanctions relief. Iranian President Ebrahim Raisi has so far refused to resume those negotiations.

Former US President Donald Trump withdrew the United States from the deal in 2018 and reimposed sanctions on Iran. Since then, Tehran has been rebuilding its stockpiles of enriched uranium, refining it to higher levels of purity and installing advanced centrifuges to speed up the enrichment process.