For many years, a portion of the world public has sought to wall itself off from people abroad by hiding behind national borders.  This nationalist approach runs counter to most of the world's great ethical and religious teachings and, also, fails to cope effectively with major problems that afflict the entire world, such as war, climate catastrophe, disease pandemics, resource scarcity, and widespread poverty. Fortunately, however, as the development of international social movements and institutions has shown us, people around the globe can work together in the interest of a brighter future for all.