When Hungarian rebels arose in 1956 to overthrow the Communist regime imposed by Joseph Stalin, President Dwight Eisenhower refused to send U.S. forces to aid the Hungarians. Ike would not take America to war with Russia over a small country in Central Europe. While the Hungarians were heroic and inspirational, Hungary was neither a member of NATO nor a vital U.S. interest. Moreover, it was on the Soviet side of the Yalta line dividing Europe, and agreed to by Franklin D. Roosevelt, Joseph Stalin and Winston Churchill at Yalta in 1945. For similar reasons today, President Joe Biden has refused...