The attack on Pearl Harbor was one of the greatest offenses against the United States of America and was the trigger for the United States to embark on the Second World War. The United States was in a period of isolation for the duration of the war until the time of the attack. The Japanese had made progress in the Pacific, which made the Roosevelt administration very uncomfortable. On the day of the attack, much more than the port was attacked: from airfields to bases, the island of Oahu was destroyed. Franklin D. Roosevelt had campaigned for isolation and stayed out of the war, but some historians and many Americans believe he knew about the attack. The majority of Americans were very angry with the Japanese. All of these events cause controversy as to whether we as a country knew they were going to happen or whether they were prepared by us. In the case of Pearl Harbor, some claim that FDR knew about the attack. Tyler Kent, a coder at the American Embassy in London, discovered that FDR told Churchill he wanted to bring America into the war (Perloff). The United States was trying to involve America in the war and was taking certain steps to achieve this, such as helping England with supplies and freezing Germany's assets, trying to get Germany to retaliate and taking the first step to involve America in the war without succeeding. obvious to the people (Perloff). According to James Perloff, "the key to a successful attack and America's entry into the war was keeping Kimmel out of the intelligence loop." Earlier in the year of the attack, the United States had broken the Japanese diplomatic code called "Purple", which seemed to aid Japanese intentions (Perloff). With his hidden agenda, the average American had no idea that there could have been any inkling that a horrific attack would occur on our own military at a time of