Smoke rises after a grenade exploded in front of the reviewing stand where Egyptian President Anwar Sadat was watching a military parade on Oct. 6, 1981. Sadat was assassinated for his pioneering efforts at peace with Israel by soldiers who fired automatic weapons and threw grenades. That ushered in the regime of Hosni Mubarak, who has maintained the cold peace, but only through an iron grip on his country. (AP Photo)