Defense Minister Binyamin Ben-Eliezer, accompanied by his Deputy Dalia Rabin-Pilosoph and MKs David Magen and Zevulun Orlev, will depart this afternoon for Sharm a-Sheikh, in southern Sinai. They will meet there with Egyptian President Hosni Mubarak. There are conflicting evaluations about what lies behind this meeting, the first visit of an Israeli Defense Minister to Egypt since Prime Minister Sharon took office. Some experts say that it will be a difficult one, and that Mubarak only agreed to it in order to placate the Americans. Others feel, however, that Mubarak has made a strategic choice to join the American-Israeli-Jordanian-Turkish alliance against Saudi Arabia, Iran, Iraq, and the Palestinian Authority.