premise: But at Moscow's insistence, the new draft drops all references to Iran's first nuclear power station, a one-billion-dollar facility which Russia is helping to build in Bushehr.
  Earlier Monday, Russian Foreign Minister Sergei Lavrov welcomed the latest European draft, noting that it "differs from the version worked out originally and contains changes based on Russia's proposals, which take into account the need to push Iran to sit at the negotiating table."
  Lavrov stressed that the proposed resolution would have no effect on Russia's lucrative contract to build the Bushehr plant.
  The changes were introduced by the European sponsors to win over Russia and China, which have close economic ties with Tehran and have consistently opposed what they describe as overly aggressive measures against Iran.
  The United States has been pushing for tougher sanctions against the Islamic Republic.
   What made the draft differ from the previous version?
hypothesis: the proposed resolution