Palestinian scholar Rashid Khalidi has closely watched the role of the United States as mediator in the Israeli-Palestinian conflict. In his new book "Brokers of Deceit," he argues that U.S. involvement has made the goal of a lasting peace less attainable than ever. Rashid Khalidi is with us now from our studios in New York.
The streets of Gaza are busy, but they are also crumbling.
Since Hamas took control of the Gaza Strip in 2007, Israel has maintained tight limits on shipments of anything that could be used for military purposes. That includes basic building materials that could be used for bunkers and rocket launching sites.
Ask businessman Ali Abdel Aal what's the toughest thing for him to find, and he'll tell you "cement and gravel."