Winston Churchill believed that the only effective way to stop the expansion of Nazism was for nations at risk to unite and prepare militarily. He advocated for collective security under the League of Nations' framework, promoting a united front against this growing threat. His call to action was encapsulated in the phrase "Arms and the Covenant."

In Martin Gilbert's book "Churchill and the Jews: A Lifelong Friendship," Churchill's perspective on the need for armed cooperation among nations is highlighted. He understood that collaboration through the League was essential for deterring aggression and protecting freedom across the continent.