US official: Iran's role in regional events could derail nuclear deal
"We're still quite concerned about state-sponsored terrorism, we're quite concerned about human rights, we're quite concerned by what is happening in Yemen, what's happening in Syria," official says.
Follow us on GoogleMembers of Iran's Revolutionary Guards march during a parade to commemorate the anniversary of the Iran-Iraq war (1980-88), in Tehran September 22, 2010. (photo credit: REUTERS)ByREUTERS