The interests of the Navajo Nation do not end at the reservation border. This chapter discusses three areas where the Navajo Nation must push the physical and legal boundaries of sovereignty in order to protect tribal interests. When it comes to water rights, off-reservation environmental destruction such as uranium mining, and protection of sacred sites, the Navajo Nation has played an active role asserting its interests and lobbying neighboring non-Indian governments. This chapter celebrates such efforts and emphasizes the ways Navajo interests are interconnected with surrounding off reservation communities.