Albert Einstein Einstein did not return to Germany. He settled in the United States and became an American citizen in 1940. On the eve of World War II, he endorsed a letter to President Franklin D. Roosevelt alerting him to the potential development of "extremely powerful bombs of a new type" and recommending that the US begin similar research. This eventually led to the Manhattan Project. Einstein supported the Allies, but he generally denounced the idea of using nuclear fission as a weapon. He signed the Russell–Einstein Manifesto with British philosopher Bertrand Russell, which highlighted the danger of nuclear weapons. He was
Albert Einstein Peace Prize in nuclear disarmament, receive(d) $50,000. Albert Einstein Peace Prize The Albert Einstein Peace Prize is/was a peace prize awarded annually since 1980 by the Albert Einstein Peace Prize Foundation. The Foundation dates from 1979, the centenary of the birth of Albert Einstein, and evokes the Russell–Einstein Manifesto which urges nuclear disarmament. It was established, with the sponsorship of the trustees of Einstein's estate, by William M. Swartz (1912–87) a wealthy businessman and the grandfather of activist Aaron Swartz. William M. Swartz was involved in the Pugwash Conferences on Science and World Affairs and established the Foundation in part to support