c-span: what happens to klaus fuchs? >> guest: fuchs is finally unmasked several years after the war in--in 1950. he was sentenced, i think, a 14-year prison term. eventually, upon his release, he--he continued his work in east germany. c-span: how did he get into this in the first place? >> guest: well, he--klaus fuchs had been a young, avid communist in his native germany. things got very tough for--for communists in germany as the nazis came to power, so he fled to great britain and eventually became a british citizen. c-span: back to the pr sheet here, which--by the way, did you write this? >> guest: i made some suggestions. c-span: because, you know, sometimes authors don't, and then they're always surprised by what's in here. 'a leaked fdr plan led hitler to declare war on the united states.' >> guest: yeah, this is frequently overlooked, brian, th--that the united states did not cl--declare war on germany; we declared war only on japan on december 8th, 1941. why did hitler do something seemingly so rash? there was