Iranian Supreme Leader Ayatollah Ali Khamenei warns of further attacks against the U.S. and Israel despite degraded military program, though experts caution that Tehran's missile capabilities remain a threat.
Iran formally ruled out any further participation in U.S. nuclear negotiations unless a series of preconditions are met, Iran's parliament ruled this week.
The United Kingdom, France and Germany have agreed to restore tough U.N. sanctions on Iran by the end of August if there has been no concrete progress on a nuclear deal, two European diplomats said Tuesday.