Although Roosevelt died before the war ended his reaction to WW2 set the Americans up for victory. His declaration to was justifiable (according to Just War Theory) and this sent a message that America was not going to stand by inaction and allow the Axis power to advance. Roosevelt's decision making was Justifiable because the U.S territory and interests were in danger, so at the time, self defence was the only option. President Roosevelt declaration of war, was not only his right, but his duty as Commander-in-Chief to do whatever it took to insure national security for the people of the United States and this gave the American troops a sense of honor when going to war because they knew their selfless decision was highly valued.
