FILE - In this March 15, 2013, President Barack Obama walks past Marine One and heads to the Oval Office at the White House in Washington. On his second trip to the Middle East as U.S. commander in chief, Obama will confront a political and strategic landscape this week nearly unrecognizable from the one he encountered on his first trip to the region shortly after assuming office in 2009. (AP Photo/Susan Walsh, File)
Palestinian activists throw shoes at a poster of US President Barack Obama in the West Bank city of Bethlehem, Monday, March 18, 2013. Some two dozen Palestinian activists protested the upcoming Obama visit. Obamas trip to Jerusalem and the West Bank will take place March 20-22, and it is the U.S. leaders first trip to the region as president, and his first overseas trip since being reelected. (AP Photo/Nasser Shiyoukhi)
CAPTION CORRECTION, CORRECTS NAME OF SCHOOL - Students of the Holon Institute of Technology for bakery and pastry making, work on an image depicting U.S. President Barack Obama made out of chocolate in Givat Shmuel, central Israel, Monday, March 18, 2013. Obamas trip to Jerusalem and the West Bank will take place March 20-22, and it is the U.S. leaders first trip to the region as president, and his first overseas trip since being reelected. (AP Photo/Ariel Schalit)
WASHINGTON (AP) — On his second trip to the Middle East as U.S. commander in chief, President Barack Obama this week will confront a political and strategic landscape nearly unrecognizable from the one he encountered on his first trip to the region shortly after assuming …