IRAN BACKS AWAY FROM KEY DETAIL IN NUCLEAR DEAL.

The article discusses negotiations between the United States and Iran regarding U.S. economic sanctions on Iran over its nuclear program, highlighting Iranian officials' claims that they are not willing to ship uranium out of Iran. Topics addressed include the impact of the officials' claims on the viability of a possible agreement, as well as calculations of "breakout time," the fastest amount of time in which Iran could develop a nuclear weapon.