After a winter of alarm over the possibility that a military conflict over the Iranian nuclear program might be imminent, US officials and outside analysts now believe that the chances of war in the near future have significantly decreased. They cite a series of factors that, for now, argue against a conflict. The threat of tighter economic sanctions has prompted the Iranians to try more flexible tactics in their dealings with the United States and other powers, while the revival of direct negotiations has tempered the most inflammatory talk on all sides.