U.S. President Barack Obama looks up as he walks through the Siq during a visit to the ancient city of Petra, in south Jordan, Saturday, March 23, 2013. (AP Photo/Carolyn Kaster)

 

              U.S. President Barack Obama looks up as he walks through the Siq during a visit to the ancient city of Petra, in south Jordan, Saturday, March 23, 2013. (AP Photo/Carolyn Kaster)
U.S. President Barack Obama looks up as he walks through the Siq during a visit to the ancient city of Petra, in south Jordan, Saturday, March 23, 2013. (AP Photo/Carolyn Kaster)