This Spanish-language poster featuring an image that can be read as a human skull or as a mushroom cloud was published by the International Union of Students (IUS). By the height of the Cold War, the IUS was focused on attracting students from nonaligned countries, especially those in Latin America, Africa, and Asia. To support these efforts, much of its literature and printed materials were issued in the languages of targeted countries and then sent to student member groups all over the world. Similar to posters produced by the Cuban-based political organization OSPAAAL, this design highlights a specific day of international recognition. In this case, August 6 commemorates the anniversary of the day the United States dropped the atomic bomb on Hiroshima, Japan.