The Szilárd petition, drafted in July 1945 and signed by dozens of scientists working on the Manhattan Project, was a late attempt at warning President Harry S. Truman about his responsibility in using such weapons.
A petición Szilárd, redactada en xullo de 1945 e asinada por ducias de científicos que traballaban no Proxecto Manhattan, foi un intento tardío de advertirlle ó presidente Truman sobre a responsabilidade requirida para o uso deste tipo de armamento.