Cutting Oil in a move to get them out of China forced them to embrace Nazi Germany (not a hard fit). It was moving the fleet to Pearl Harbor that did the trick—why? so we could strike the home Islands if they moved on Oil Rich Dutch east indies. FDR Knew an attack was coming but he never expected it to be as bad as it was—he needed it to get the Americans into the War to knock out Hitler. But he cursed us with a powerful USSR and handed them Eastern Europe. (and China etc...)
The Left was all for staying out of the war, until Hitler attacked their beloved Soviet Union.
The only reason to put that Fleet there in the manner that it was was to act as bait, to entice the Japanese into firing the first shot.
FDR could not have cared less about Europe. FDR was a Communist and everything he did before and during WWII was to save the Soviet Union and further the cause of Communism.