 Writing in his 1980 volume "Expanded Universe", Heinlein would say that the publication of a newspaper advertisement placed by the National Committee for a Sane Nuclear Policy on April 5, 1958, calling for a unilateral suspension of nuclear weapons testing by the United States sparked his desire to write "Starship Troopers".Heinlein and his wife Virginia created the "Patrick Henry League" in an attempt to create support for the U.S. nuclear testing program.Heinlein stated that he used the novel to clarify his military and political views.