People often forget that it was Germany that declared war on the United States. Isolationism (and even pacifism) rarely survives when one is on the receiving end of an act of war.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;German_declaration_of_war_against_the_United_States_(1941)" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;German_declaration_of_war_agai...</a>