Germany called on the other five powers to display unity in whatever action they take action on Iran, Foreign Ministry spokesman Jens Ploetner told reporters in Berlin today. He declined to give an assessment of the Iranian letter. Russian Foreign Ministry spokesman Igor Lyakin-Frolov said a decision on future action can only be made after the conference call.

``I think the most important thing we can do is let the political directors have their conference call and decide on their next steps,'' Perino said.

The U.S.-backed package to Iran includes the construction of a light-water nuclear reactor and a guarantee of a fuel supply. It also offers to improve Iran's access to international markets, support for its inclusion in the World Trade Organization and the modernization of its agricultural and telecommunication industries.