Einstein himself had never been involved in the [[Manhattan project]]. He was considered a security risk, as he was a member, sponsor, or affiliated with thirty-four communist fronts between 1937 and 1954.<ref>[http://web.archive.org/web/20040810044240/http://foia.fbi.gov/foiaindex/einstein.htm "Albert Einstein"] (2004). Federal Bureau of Investigation website. Retrieved from August 10, 2004 archive at Internet Archive on January 25, 2015.</ref> Later he condemned the use of nuclear weapons. | Einstein himself had never been involved in the [[Manhattan project]]. He was considered a security risk, as he was a member, sponsor, or affiliated with thirty-four communist fronts between 1937 and 1954.<ref>[http://web.archive.org/web/20040810044240/http://foia.fbi.gov/foiaindex/einstein.htm "Albert Einstein"] (2004). Federal Bureau of Investigation website. Retrieved from August 10, 2004 archive at Internet Archive on January 25, 2015.</ref> Later he condemned the use of nuclear weapons. |