Weeeeeeeelllll..... Hold on a second, FRiend.
I'm not a big Truman fan, but I won't go so far as to say "he sucked". He certainly won't be getting any "greatest President" accolades from me.
He DID order the nuking of Japan, and he DID stand against the communists; so IMHO, the man can't be ALL bad. ;0
Also, he knew (perhaps instinctively) that Joe Stalin wasn't kinda like the "Russian Senator from Georgia" who could be bought off with a pork-barrel aid package. He knew well the threat that we faced from communism - something that FDR and his pack of sychophants didn't seem to get.
Truman was ready and willing to divid Japan into zones just as Geramny was, McAuthur refused. Again disobeying orders from Washington. Well not really since Truman ordered McAuthur to share Japan with Stalin, McAuthur gave them a spot ringed by American bases. Stalin hated McAuthur. McAuthur was also ordered to give the British a zone, he gave them Hiroshima. Truman did not to squat to stop the Sovets until Korea, and one could argue that Korea would never have happened if the Truman administration had not advertised that Korea was of no interest to the United States. But McAuthur was equally to blame for pulling US Forces out of there in 49, Dido Joint Chiefs who OKed the withdrawal, bad move on everyones part.