Potomac Institute for Policy Studies Senior Fellow Amb. David Smith warns that a new geopolitical dynamic among some emerging nations is complicating US attempts to halt Iran's nuclear ambitions.  Writing in the Georgian magazine Tabula before the recent UN Security Council sanctions vote, Amb. Smith noted that a cooperative agreement struck among leaders of Iran, Turkey and Brazil signals a world in which emerging countries "are flexing their muscles and beginning to mold the future," regardless of what Washington thinks.  Adds Smith, "Washington appears not to understand that Iran wants nuclear weapons not as dangerous toys but as geopolitical tools to undermine American superpower, a prospect that Russia and China relish." Click below to read the full article.