The United States government was prepared to see Britain over run by Nazis. Ambassador Kennedy and Charles Lindberg along with the majority of Americans were proponents of neutrality regardless of cost to allies and the world order. The fall of France and the Russian deal with the devil, left Britain and the Commonwealth alone to take on the armed to the teeth bully, Hitler and his Nazis cult.

It took Japan's bombing of Pearl Harbor and Hitler's declaration of war against United States to rattle the status quo.

Lend lease was good but hardly what the dire situation called for. Canada did the amazing in transforming from a peaceful nation with a token military to a substantive military force to be reckoned with. Churchill had little to challenge Hitler and Nazis, all the more important to have stand up allies.

United States emerge from WW11 as the dominate world power with all the perks and liabilities that entails. Alienating allies can be costly.