Iranian Red Crescent Society / AP US-Iran talks aimed at curbing Iran’s advanced nuclear program are moving toward detailed and technical discussions, with analysts voicing cautious optimism about progress.As negotiators met for the third time last Saturday, an explosion rocked Iran’s largest commercial port, killing scores of people and causing huge damage to vital economic infrastructure.The authorities blamed negligence, but sabotage suspicions abound, given the Israeli government’s interest in seeing the negotiations fail and its history of clandestine attacks in Iran. Save for later Print Download Share The Issue