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: Creator and Rebel Russian, as "Al'bert Ejnštejn – tvorec i buntar"(1975) ; into French, as "Albert Einstein : créateur et rebelle" (1975) ; into Slovenian, as "Albert Einstein, ustvarjalec in upornik" (1980); into German, as "Albert Einstein, Schöpfer und Rebell" in 1978; Italian, as "Albert Einstein, creatore e ribelle" (1977, reprinted 1988); Dutch, as "Albert Einstein : schepper en rebel" (1975); Spanish, as "Einstein" (1984); Japanese, as "Ainshutain, sozo to hankotsu no hito" (1974), Georgian, as "Albert Einsteini : Shemokmedi Da Meambokhe", and Greek, as "Αϊνστάιν, δημιουργός και επαναστάτης" (1982). Albert Einstein: Creator and Rebel Albert Einstein: Creator and Rebel is a book