Tehran, May 17 -- Laying bare a deepening diplomatic gridlock, Iranian media said on Sunday that the United States had failed to make any concrete concessions in its latest response to Iran's proposed agenda for negotiations to end the war.

Dismantling the specifics of Washington's diplomatic framework, the Fars news agency said Washington had presented a five-point list, which included a demand for Iran to keep only one nuclear site in operation and transfer its stockpile of highly enriched uranium to the United States.

The media outlet further revealed a stark financial impasse, noting that the US also refused to release "even 25 per cent" of Iran's frozen assets abroad or pay any reparations for the damage inflicted on Iran during th...