The answer lives in this podcast
What was American public opinion and official policy toward the war in Europe at the outbreak of World War II in 1939?
When Germany invaded Poland on September 1, 1939, 90% of Americans polled said the United States should absolutely not get involved. Neutrality laws made it nearly impossible to aid the Allies, and the peacetime army was small. Yet President Franklin Delano Roosevelt was watching Europe closely — and had already opened a secret line of communication with Winston Churchill, convinced that American intervention was only a matter of time.
A nation that said no — unanimously, and loudly
The 90% figure is not a rounding error. It reflects a deep, deliberate national mood. The memory of World War I — the lives lost, the debts incurred, the sense that Europe's quarrels were not America's to settle — had calcified into a firm political doctrine of non-intervention. As Tom Hanks traces in World War II with Tom Hanks, this was the prevailing sentiment at every level of American society when the war broke out.
Neutrality laws reinforced public opinion with legal force. Arms sales, loans, even travel to belligerent nations — all were restricted or prohibited. The architecture of American law in 1939 was built precisely to keep the country out of another European conflict. Participation wasn't just unpopular; it was, in most practical respects, illegal.
Roosevelt's secret calculation — freedom was already at stake
Roosevelt read the situation differently from almost everyone around him. He understood, as Hanks explains in this episode, that the war was not simply a territorial dispute between European powers. At its core, it was a question about freedom and democracy — values that could not be partitioned from American interests.
That conviction led Roosevelt to act in the only way he could given the political climate: quietly. He opened a secret correspondence with Churchill — who at that point had just been reappointed First Lord of the Admiralty — inferring that the conflict would be enormous in scale and that the United States would almost certainly need to enter it at some point. It was a bet placed in private, long before the American public was ready to hear it.
"Poland has been overrun by two of the great powers which held us in bondage for 150 years, but were unable to quench the spirit of the Polish nation. The heroic defence of Warsaw shows that the soul of Poland is indestructible."
Spoken in the opening days of the war — a reminder, heard in World War II with Tom Hanks, that even as America stayed silent, others were already staking everything on the idea that resistance mattered.
The gap between public sentiment and executive foresight in 1939 is one of the most striking tensions of the early war years. Roosevelt could not lead openly — but he could position the United States for what he believed was inevitable. That gap between what the country wanted and what its president suspected would define American policy for the next two years, right up to Pearl Harbor. The full arc of that story unfolds across World War II with Tom Hanks.
See also
What role did Winston Churchill play at the outset of World War II and why did Roosevelt seek him out rather than Chamberlain?
Churchill was appointed First Lord of the Admiralty and joined the new war cabinet after war was declared, having spent the 1930s as Hitler's most vocal critic. Roosevelt saw in him the one leader who truly grasped the nature of the threat — which is why the secret correspondence went to Churchill, not Chamberlain.
What was Britain and France's strategic response to the German invasion of Poland in September 1939?
Despite having signed a guarantee with Poland promising military assistance if Germany invaded, Britain and France were neither militarily nor mentally prepared to mount an effective response. They declared war on Germany but launched no meaningful offensive before Poland was overrun.
How did Hermann Göring's Luftwaffe contribute to the destruction of Warsaw in 1939?
Göring ordered the largest air raid ever seen to break Warsaw's resistance, dropping thousands of pounds of high-explosive and incendiary bombs over the city. The bombardment destroyed roughly 20% of Warsaw and left approximately 18,000 people injured or killed.
Key takeaways
- 90% of Americans polled at the outbreak of war in 1939 opposed any U.S. involvement in the European conflict — a near-unanimous public mandate for neutrality.
- American neutrality laws went beyond sentiment: they legally restricted arms sales, financial aid, and travel to nations at war, making Allied support almost impossible.
- Roosevelt privately framed the war as a fundamental question about freedom and democracy — not a foreign quarrel — and acted on that belief through a secret channel to Churchill.
- The secret Roosevelt–Churchill correspondence was a calculated long game: the president was preparing for intervention years before the public or Congress would have permitted it.
This answer comes directly from Episode 1: The Beginning of World War II with Tom Hanks. The full episode covers the invasion of Poland, the first days of the war, and the forces that would shape the next six years.
Listen to the episode on Listenly