Answer:
Step-by-step explanation:
Roosevelt knew that war was inevitable. The American people did not want to engage in another war -- the first war was bad enough. Ordinary Americans wanted peace and prosperity,
Roosevelt was not a war monger. He didn't like the idea of war, but he thought it was inevitable. Any thought of appeasing the Japanese was (for Roosevelt) an unthinkable idea. He saw what that did with Germany and Great Britain. He did try to negotiate with Japan -- to no avail once Pearl Harbor happened.
So he waited. That's all he could do because America was not willing and not motivated and not ready to go to war.