"It is easy for you and for me to shrug our shoulders and to say that conflicts taking place thousands of miles from the continental United States, and, indeed, thousands of miles from the whole American Hemisphere, do not seriously affect the Americas-and that all the United States has to do is to ignore them' and go about its own business. Passionately though we may desire detachment, we are forced to realize that every word that comes through the air, every ship that sails the sea, every battle that is fought, does affect the Americana future." FDR, 1939
"The American appeasers ignore the warning to be found in the fate of Austria, Czechoslovakia, Poland, Norway, Belgium, the Netherlands, Denmark, and France. They tell you that the Axis powers are going to win anyway; that all this bloodshed in the world could be saved; that the United States might just as well throw its influence into the scale of a dictated peace, and get the best out of it that we can. They call it a "negotiated peace." Nonsense! Is it a negotiated peace if a gang of outlaws surrounds your community and on threat of extermination makes you pay tribute to save your own skins? Such a dictated peace would be no peace at all. It would be only another armistice, leading to the most gigantic armament race and the most devastating trade wars in all history. And in these contests the Americas would offer the only real resistance to the Axis powers." FDR, 1940
Happy to also copy/paste the notable Mark Twain quote about history if it'd help.