The Foundation of the Alliance System The legal basis for American cooperation began even before the attack on Pearl Harbor formally brought the U. From the earliest days of the fight against Axis aggression, America’s survival and success depended on a network of strategic partners.
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The Soviet Union, despite ideological differences, became a vital military partner following the German invasion in 1941. Following the fall of France in 1940, Britain stood alone against the Nazi war machine on the European continent.
Similarly, in the Pacific, the combined fleet operations of the U. The integration of Allied forces required unprecedented levels of coordination.
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The alliance between Franklin D. The Expanding Front As the conflict escalated, the coalition widened to include nations that were essential for opening up theaters of war against Japan and Nazi Germany.
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