2. Let's end any excuse that America needed Communist Russia, possibly as an ally against Hitler: Roosevelt was pals with Hitler....and, he embraced the USSR in 1933, with no WWII on the horizon.
The OP is full of distortions and subjectivity. Roosevelt's decision to return to diplomatic relations with the USSR was a pragmatic one. He came into office four years into the Great Depression and business people were insisting that trade agreements with the USSR were needed for economic reasons. Being pals with Stalin had nothing to do with it. The Soviets owed huge debts that would not be repaid and trade could not resume unless relations were reestablished.
The statement that indicates no one saw a war on the horizon shows a lack of historical knowledge. There were those that saw a future war coming immediately after the Armistice was signed following WWI. War had been predicted in published works of the 1920's, particularly with Japan. Japan and Russia had a history of warfare and it was being predicted that USSR would be a key in defeating Japan in the predicted war.