Today marks the 81st anniversary of the #YaltaConference, when Roosevelt, Churchill, and Stalin met to discuss the final defeat of Nazi Germany. Already very sick at Yalta, Roosevelt wouldn’t live to see Germany’s surrender.
It occurred to me that Truman gave Roosevelt explicit credit for his role in the war with Germany. Reagan never gave Carter credit for negotiating the release of the Iranian hostages even though Reagan did literally nothing to achieve that. You could fairly say it's because Truman and Roosevelt were from the same party while Reagan and Carter were from different ones, but I think that makes Reagan look quite petty.