US-Iran deal 'never been closer': Iranian FM

"The Islamabad Memorandum of Understanding has never been closer," Araghchi wrote on X, referring to the Pakistani capital which hosted previous US-Iran talks.

"Pending its finalization, the media should refrain from entering speculation about its content," he added, after purported details of the accord were published by Iranian media.

"In line with our responsible and transparent approach, all details will be shared with the public in due course," Araghchi added.

Expectations have grown in recent days that the two sides are on the verge of an accord, even if tensions and sticking points remain.

US President Donald Trump had earlier lashed out at the leaks in Iranian media, saying on Truth Social "they have NOTHING to do with the terms that were agreed to, in writing".