US must return to interim deal, no ceasefire extension talks, senior Iranian source says ReutersIran war live: Mediators push for US-Iran talks as MoU deadline approaches Al JazeeraIran says no progress on reviving interim peace deal with US ReutersPakistan signals progress on U.S.-Iran deal as Washington and Tehran trade reparation demands CNBCUS, Iran agree to extend 60-day ceasefire ahead of Aug. 17 deadline Anadolu Ajansı