I always found it hard to believe that the U.S. "missile shield" -- as described here -- in Poland and the Czech Republic was intended to defend against Iran.
(hint- western europe- 2012 and beyond- France Germany Italy and Spain all weak, energy dependent, and unwilling to ally with US against a nuclear Iran and its hostile protector Big Bro Russia. The eastern europe leaders much more dynamic, liberty loving, willing to ally with the US - if protected from retaliation by Iran mid-range missiles)