Tehran's delegation held "generally positive" talks in Doha May 26 to iron out sticking points in the proposed memorandum to extend the ceasefire 60 days and reopen the Strait of Hormuz; under the phased terms the US would release frozen Iranian assets (reported between $12B in a first phase and ~$24B in total), begin minesweeping, and lift the blockade, with the nuclear issue deferred. Secretary of State Rubio said a deal could still take several days and the memorandum was unsigned - a further but incomplete move toward the durable-Hormuz-reopening invalidation leg.