Article Photos: Tensions high, U.S. warns Iran not to block shipping 1/5

Iran's first lady Azam al-Sadat Farahi, front, arrives to an air base as she prepares to depart Quito, Ecuador, Friday Jan. 13, 2012. Azam al-Sadat Farahi accompanied her husband, Iran's President Mahmoud Ahmadinejad, during a four nation tour in Latin America.  (AP Photo/Dolores Ochoa) ORG XMIT: DOR105