Full Analysis Summary
Progress claimed, no deal
Iranians cited progress in talks.
A marathon session produced no deal, as negotiators left the extended meeting without an agreement despite Tehran's claim of forward movement.
Negotiation report summary
The piece attributes the claim of progress to Iranian participants.
It describes the negotiating meeting as a "marathon session."
However, it does not provide the identities of the other parties involved, the specific issues under discussion, the details of the progress claimed, or any figures or timelines tied to the talks.
Unclear Iran talks outcome
Because the article offers no further factual details, it is unclear what concrete concessions, text changes, or commitments—if any—were made, what steps will follow, or what deadlines, if any, govern future talks.
I cannot add or assume information beyond what the article states: Iranians said there was progress, and the marathon session ended without a deal.