Palestinians in front of a section of Israel's separation barrier, decorated with a graffiti depicting the late Palestinian leader Yasser Arafat, next to the Kalandia checkpoint, between Jerusalem and the West Bank city of Ramallah, Monday, May. 18, 2009. Israeli Prime Minister Benjamin Netanyahu heads into his first visit with President Barack Obama worried by U.S. overtures to Iran and Syria and under pressure to support a Palestinian state.