negotiations on a lasting cease-fire in Gaza grind on in Cairo, it's not only the animosity between Israel and Hamas that is complicating the talks -- it's also Egypt's role as mediator. Egypt's internal politics -- far more fraught and violent than they were during Hosni Mubarak's era -- have intruded on the attempts to reach an agreement, as the military-dominated government in Cairo attempts to use the talks as part of its war against the Muslim Brotherhoo