Undertaken by the United States of America, the Manhattan project was the name of the effort put into developing nuclear weapons during World War 2. With the Japanese attack on Pearl Habor being the defining factor for the Americans to use their weapons of mass destruction, nuclear weapons become a deadly defense leaving millions affected to this day. Through the deontological and teleological frameworks of ethics, the mathematicians who played a role in the Manhattan Project are not to be condemned for their actions based off deontological ethics.