Hundreds, hundreds of millions!
By the way not only FDR was soviet agent, but mr. Conservatism itself:
In January 1947, nearly a year after his “iron curtain” speech at Fulton, Missouri – Churchill received a message from Stalin via Field Marshal Bernard Montgomery, who had just visited Moscow. Stalin told Churchill that he would “always have the happiest memories of [his] work with the great war leader of Britain” and that he had “the greatest respect and admiration for what Churchill had done during the war”.
Churchill replied to Stalin that: “Your life is not only precious to your country, which you saved, but to the friendship between Soviet Russia and the English-speaking world.”
This correspondence may be found in both the British and Russian archives.