After a year of presentations from the Heritage group and others, on 23 March 1983 Reagan went on television and announced that he was calling "upon the scientific community who gave us nuclear weapons to turn their great talents to the cause of mankind and world peace: to give us the means of rendering these nuclear weapons impotent and obsolete." Many historical overviews place much of the impetus for this speech directly on Teller and Wood's presentations, and thus indirectly on Hagelstein's work.