Sandwiched between Egypt and Sudan is a sparsely inhabited parcel of desert claimed by neither country. Known as Bir Tawil, it is one of the few examples of terra nullius—land that legally belongs to no one. Historically, much land has been taken from indigenous peoples under the pretense of declaring it terra nullius, as happened in Australia. Today, almost all land is recognized as being under the jurisdiction of someone, except for Bir Tawil and what other place? Discuss